Jason Cohn / Reuters

Two people wait to leave the University of Pittsburgh School of Medicine after the area was locked down by police after a shooting at the Western Psychiatric Institute and Clinic of University of Pittsburgh Medical Center in Pittsburgh on March 8.

Jason Cohn / Reuters

A Pennsylvania State Police officer keeps watch over the back of the Western Psychiatric Institute and Clinic of University of Pittsburgh Medical Center in Pittsburgh on March 8.

A gunman opened fire at a psychiatric clinic at the University of Pittsburgh on Thursday in a shooting that killed two people, including the gunman, and wounded seven others. 

A SWAT team was on the scene shortly after the shooting. A street was blocked off, and the area thronged with police. Most students are on spring break, though offices and buildings have been open. 

There were no details about the second death, and it was unclear whether the seven wounded people were patients, employees or visiting family members.

-- NBC News, msnbc.com staff and news services

Related links:

• 2 dead, 7 injured in Pittsburgh psychiatric clinic shooting

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Jason Cohn / Reuters

Police evacuate people from the Western Psychiatric Institute and Clinic of University of Pittsburgh Medical Center in Pittsburgh.

GRAPHIC WARNING: This post contains graphic images which some viewers may find disturbing.

John Fancher / Reuters

A man holds a gun as Tulsa County sheriff's deputies and other law enforcement officers surround him on the plaza in front of the Tulsa County courthouse in Tulsa, Oklahoma, on March 7, 2012.

A 23-year-old man was arrested Wednesday after he opened fire outside the Tulsa County Courthouse, police said. Three people were injured.

Police said the man, identified as Andrew Joseph Dennehy, walked into the plaza outside the courthouse and Tulsa City-County Library and began firing into the air. A deputy fired back, police said.

John Fancher / Reuters

Sheriff's deputies and other law enforcement officers secure the gunman.

Emergency Medical Services Authority Capt. Chris Stevens said one man was taken to a hospital in critical condition and that two other people were hospitalized, one in serious and one in fair condition. A woman, who was not hit by gunfire, was "shaken up" and treated at the scene. Read the full story.

— Msnbc.com staff and news services contributed to this report.

John Fancher / Reuters

Tulsa County sheriff's Sgt. Shannon Clark told NBC News on Wednesday that the suspect was in critical condition.

Shannon Stapleton / Reuters

Students are seen on a Chardon Local School District bus arriving for the first day of regular schedule classes since the school shootings in Chardon, Ohio, on March 2. Three students were killed and two others wounded by suspect T.J. Lane in Monday's shooting rampage at the Ohio high school.

Shannon Stapleton / Reuters

Students arrive for the first day of regular schedule classes at Chardon High School since the school shootings in Chardon, Ohio, on March 2.

AP reports -- Students are returning to an Ohio high school where a shooting earlier this week killed three teens and wounded two others.

Police were on hand as students arrived under cloudy skies by car, on foot and by school bus at Chardon High School on Friday which resumed classes following Monday's shooting.

Read the full story.

Shannon Stapleton / Reuters

A memorial is seen outside Chardon High School as regular scheduled classes resume since the school shootings in Chardon, Ohio, on March 2. Three students were killed and two others wounded by suspect T.J. Lane in Monday's shooting rampage at the Ohio high school.

Shannon Stapleton / Reuters

Students walk to a memorial remembering the victims of the Chardon High school shootings before returning to school for the first time since the shootings in Chardon, Ohio, on March 1.

Shannon Stapleton / Reuters

Students and parents gather outside a memorial remembering the victims of the Chardon High school shootings before returning to school for the first time since the shootings in Chardon, Ohio, on March 1. Three students were killed and two others wounded by suspect TJ Lane in Monday's shooting rampage at the Ohio high school.

Slideshow: Deadly school shooting in Ohio

Aaron Josefczyk / Reuters

Three students was killed and 2 were injured in a shooting Monday morning at an Ohio high school, officials said.

Launch slideshow

CHARDON, Ohio -- The deadline to file charges in a fatal Ohio high school shooting loomed as students still reeling from the slaying of three teenagers marched by the hundreds to their reopened school Thursday.

The students, many with their parents and wearing the school colors of red and black, started the day gathered around a courthouse square gazebo, quietly singing the alma mater.

Students hugged each other and parents as they left the gazebo, which was decorated with a growing memorial of candles, flowers and handwritten messages of support.

"I'm just scared for everybody and I don't know how everybody is going to act going back into school," said Theodore Rosch, 16, a freshman, as his father, Will Rosch, wrapped his left arm around his son's shoulders.

Read the full story.

-- Associated Press

Mark Duncan / AP

Hundreds of students and parents march to the Chardon High Schooll in Chardon, Ohio, on March 1 to honor the three students who were killed in a shooting there Monday.

Mark Duncan / AP

Students and parents march to the high school in Chardon, Ohio, on March 1 to honor the three students who were killed in a shooting there Feb. 27. The school re-opened to parents and students Thursday and classes resume Friday.

Shannon Stapleton / Reuters

People gather outside St. Mary's of Chardon on Feb. 28 for a candlelight vigil remembering the victims of a school shooting in Chardon, Ohio.

Jeff Swensen / Getty Images

Students and those in the community embrace one another as they hold a candlelight vigil at St Mary's of the Assumption Church in Chardon, Ohio on Tuesday night.

Slideshow: Deadly school shooting in Ohio

Aaron Josefczyk / Reuters

Three students was killed and 2 were injured in a shooting Monday morning at an Ohio high school, officials said.

Launch slideshow

Hundreds gathered at St. Mary's of Chardon Tuesday night following the deadly school shooting at Chardon High School. 

The death toll rose to three students as the suspect, 17-year-old T.J. Lane, appeared at a preliminary hearing where a prosecutor said Lane had confessed to investigators and that he said he fired at students randomly.

--Msnbc.com news services contributed to this post

Related links:

• School shootings and PTSD: Trauma can last for months or years
  
• Third student dies in shooting; gunman said to have fired randomly

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Jonathan Gibby / Getty Images

A memorial rests on a highway on Jan. 8 for the six people that lost their lives in a deadly shooting last year across from the La Toscana Village Safeway in Tucson, Ariz. Memorial services will be held throughout the day in Tucson to commemorate the one year anniversary of a shooting rampage that killed six people and wounded more than a dozen including U.S. Rep. Gabrielle Giffords (D-AZ).

AP reports:

The 41-year-old Giffords has spent the last year in Houston undergoing intensive physical and speech therapy. Doctors and family have called her recovery miraculous after the Jan. 8 shooting; she is able to walk and talk, vote in Congress and gave a televised interview to ABC's Diane Sawyer in May. But doctors have said it would take many months to determine the lasting effects of her brain injury. The three-term congresswoman has four months to decide whether to seek re-election.

"She's making a lot of progress. She's doing great," said Rep. Debbie Wasserman Shultz, a close friend, said. "She still has a long way to go."

Full story: Giffords, Tucson mark deadly rampage anniversary

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Don Petersen / AP

Virginia Tech police officers console one another as they move toward the scene where a fellow police officer was killed in a parking lot on the campus of Virginia Tech, Dec. 8, in Blacksburg, Va. A man killed a police officer and another person after a traffic stop Thursday at Virginia Tech, sending a shudder through campus as students and faculty were told to stay inside and police searched for the gunman, school officials said.

NBC News and msnbc.com staff report:

The officer was shot during a traffic stop, Virginia Tech spokesman Mark Owczarski told NBC News.

"Witnesses reported to police the shooter fled on foot heading toward the Cage, a parking lot near Duck Pond Drive. At that parking lot, a second person was found. That person is also deceased, Owczarski said.

A Virginia Tech alert described the suspected shooter as a white male wearing gray sweat pants, a gray hat with a neon green brim and a maroon hoodie, and carrying a backpack.

Read the full story here.

Don Petersen / AP

Local S.W.A.T. team members congregate near a parking lot on the campus of Virginia Tech to look for an armed man who is suspected of killing two people, Dec. 8, in Blacksburg, Va. The school said a police officer pulled someone over for a traffic stop and was shot and killed. The shooter ran toward a nearby parking lot, where a second person was found dead. It was the first gunfire on campus since 33 people were killed in 2007 in the deadliest mass shooting in modern U.S. history. The deaths came on the same day university officials were in Washington appealing a fine that federal officials gave them over the school's response five years ago.

Don Petersen / AP

Police officials examine the body of a police officer shot to death in a parking lot on the campus of Virginia Tech, Dec. 8, in Blacksburg, Va. The school said a police officer pulled someone over for a traffic stop and was shot and killed. The shooter ran toward a nearby parking lot, where a second person was found dead. It was the first gunfire on campus since 33 people were killed in 2007 in the deadliest mass shooting in modern U.S. history. The deaths came on the same day university officials were in Washington appealing a fine that federal officials gave them over the school's response five years ago.

Katherine Davison / Reuters

Armed police officers search the Virginia Tech campus near the Squires Student Center for a gunman after a police officer and another person were shot and killed on the campus in Blacksburg, Va., Dec. 8.

AP

A heavily armed gunman walks inside the courtyard of the the Ottoman-era Topkapi Palace in Istanbul, Turkey, on Nov. 30, 2011. A gunman wounded a soldier and a security guard at the entrance of Istanbul's Topkapi Palace before being shot dead Wednesday, witnesses said.

Osman Orsal / Reuters

A police officer tries to keep away people from the entrance of Topkapi Palace in Istanbul on Nov. 30, 2011.

msnbc.com news services report:

A heavily armed gunman wounded a soldier and a security guard at the entrance of Istanbul's Topkapi Palace before being shot dead Wednesday, witnesses said.

Multiple gun shots were heard from behind high walls of the Topkapi Palace, which is across the city's Blue Mosque, an Associated Press Television editor at the scene said.

A picture by IHA news agency showed the man carrying at least two rifles and a cartridge belt around his neck. The picture shows the man wearing a black overcoat, cap and also carrying a backpack. Read the full story.

Cathleen Allison / AP

Officers look through a bullet-damaged window of an IHOP restaurant in Carson City, Nev. on Tuesday, Sept. 6, 2011. Seven people were wounded after a gunman opened fire at the restaurant, authorities said.

Cathleen Allison / AP

Emergency personnel respond to a shooting at an IHOP restaurant in Carson City, Nev. on Tuesday, Sept. 6, 2011.

From the full story:

One person is dead and at least seven people were wounded during a shooting Tuesday morning at a restaurant in Carson City, according to the FBI and local police.

Lt. Rob Van Diest of the Reno Police Department told the Reno Gazette-Journal that one person has been confirmed dead.

Carson City Sheriff Kenny Furlong told The Associated Press the gunman opened fire inside an IHOP restaurant about 9 a.m. on Tuesday. He said multiple people were wounded, including the shooter.

Karen Schiely / Akron Beacon Journal via AP

Members of the Copley Township community bow their heads in prayer during a vigil at Copley Community Park in Copley Township, Ohio, Aug. 7. A man gunned down two people outside a Copley Township home and two more in a car Sunday morning. He then shot his girlfriend in a rampage that left eight dead including the gunman, who was shot by police.

AP reports:

A neighbor, Gilbert Elie, said he was getting ready for church when he heard gunshots and cries for help in his northeast Ohio neighborhood, a wooded, residential area outside Akron. He went to a house across the street and said he found a shocking scene: the woman who lived there lying in the driveway, her husband shot near the garage, and their young granddaughter and another woman shot in the front seat of a vehicle, the windows apparently blown out by gunfire.

A third woman came out of the house next door and tried to talk to Elie, he said, but their brief exchange ended abruptly when a man followed her out of the house and shot her, sending the 75-year-old Elie running for safety behind a truck.

"She was talking to me, and he come up behind her and shot her, so I figured, maybe I'm next," he told The Associated Press.

Read the full story here.