Syrian soldiers investigate the scene after a bomb attached to a fuel truck exploded outside a hotel where U.N. observers are staying in Damascus, Syria, on August 15, 2012. Several people were wounded, Syria's state TV reported. It said the explosion took place near a parking lot used by the army command, which is about 300 meters away.

Syrian soldiers investigate the scene after an explosion in Damascus on August 15, 2012.

Civil Defense members extinguish fires on cars at the site of an explosion outside Syria's highest court in central Damascus on June 28, 2012. The explosion tore through the car park outside the court on Thursday, torching at least 20 cars, a Reuters witness said, but it was not immediately known if there were any casualties.

Civil Defence members extinguish fires on cars at the site of an explosion outside Syria's highest court in central Damascus on June 28, 2012.

A Syrian fireman tries to extinguish fires at the scene of two huge bomb explosions outside the Palace of Justice in Central Damascus on June 28. A police source told AFP on condition of anonymity that two magnetic bombs exploded in two judges' cars in the open-air car park, while a third was in the process of being defused.

Smoke rises at the site of bomb explosion in the garage of the Justice Palace in Damascus, Syria, on June 28. According to SANA, a bomb went off at the garage area of the Justice Palace in Damascus, injuring three people and causing material damage.

Smoke rises above Damascus after two huge bombs exploded outside the Palace of Justice in Central Damascus on June 28.

Members of the public assist firefighters at the scene of a blast in central Nairobi, Kenya on May 28, 2012.

An injured woman is carried to an ambulance.

Civilians attempt to extinguish a fire in a clothing shop after the explosion. Dense black smoke billowed from the badly damaged building and sirens blared as emergency service crews rushed to Moi Avenue, a major road running through the city center.

A man sits among the debris left by yesterday's explosion at the Mpila district of Brazzaville, March 5. The Congo issued a plea for international help Monday as soldiers began recovering bodies from an area devastated by huge explosions at a munitions depot that left more than 150 dead and 1,000 injured. President Denis Sassou Nguesso announced a curfew in the capital Brazzaville and set up an exclusion zone around the devastated eastern district of Mpila, following an emergency cabinet meeting in the early hours of the morning.

Police and residents walk through the debris of the Lycee de la Revolution school near the military barracks in the Mpila district of Brazzaville, March 5.

A calcinated tree stands on March 5 in the middle of homes devastated by a huge explosions at a munitions depot in the Mpila area Brazzaville. The government said an electrical short-circuit likely caused a fire, which triggered a series of blasts so powerful they devastated the surrounding area and blew out windows in Kinshasa, the capital of the neighboring Democratic Republic of Congo situated across the Congo river.

A plume of smoke can be seen over Brazzaville from across the Congo River in Kinshasa, capital of neighboring Democratic Republic of Congo on March 4. A diplomatic source in the Congolese capital said the blasts came from a munitions depot in the east of the city. There was no official word from Brazzaville on the cause of the explosions, or damage sustained.

Russia's members of Emergency Situation Ministry and Interior Ministry officers work at the site of a damaged nine-storey building in Russia's southern city of Astrakhan on Monday. The building collapsed after a household gas explosion, injuring 12 people according to preliminary information released by local media.

Rescuers inspect debris of an apartment building after an explosion on Monday.

Chuck Cox, right, reaches out to touch the casket bearing his grandsons, Charlie Powell and Braden Powell, as he walks with his wife Judy Cox during a funeral service the two boys on Feb. 11, in Tacoma, Wash. The boys died Feb. 5, when their father, Josh Powell, set fire to the home he was living in while they were visiting. Powell had been a person of interest in the 2009 disappearance of his wife Susan.

Mourners hug before a memorial service for Charlie Powell, 7, and Braden Powell, 5, at the Life Center Church in Tacoma, Wash., Feb. 11. The family of missing Utah woman Susan Powell is holding a public funeral for her two sons, nearly a week after their father killed them in a gas-fueled blaze. Hundreds of people are attending the Saturday service. Many are wearing purple and blue ribbons in memory of 7-year-old Charlie and 5-year-old Braden. Family members and the boys' teachers are scheduled to speak. The boys' remains are in one coffin adorned with flowers. They were killed in a fire set by their father, Josh Powell, when they went to visit him Sunday at his home in Graham, Wash.

Syrian TV shows the scene of a blast in Aleppo on Feb. 10, 2012.

Security forces and onlookers at the scene of a blast in Aleppo on Feb. 10, 2012.

Bodies lying at the scene of a blast in Aleppo on Feb. 10, 2012.

The smoldering remains of a house, left, where an explosion killed Josh Powell and his two sons, Sunday, Feb. 5, 2012, is shown from the air in Graham, Wash. The explosion occurred moments after a Child Protective Services worker brought the two boys to the home for a supervised visit. Powell's wife Susan went reportedly missing from their West Valley City, Utah, home in December 2009.

Eliana and her mother Jennifer Bakley hug while Melissa Phillips look over the smoldering remains of a house near Fredrickson, Wash., Sunday, Feb. 5, 2012, where, according to a sheriff's spokesman, three bodies were were found. The bodies are believed to be Josh Powell and his two sons. The explosion occurred moments after a Child Protective Services worker brought the two boys to the home for a supervised visit.

Pierce County Sheriff's deputies and Graham Firefighters work around the smoldering remains of a house near Fredrickson, Wash., Sunday, Feb. 5, 2012, where, according to a sheriff's spokesman, three bodies were were found. The bodies are believed to be Josh Powell and his two sons. The explosion occurred moments after a Child Protective Services worker brought the two boys to the home for a supervised visit.

Black smoke is seen rising from Homs refinery in Syria on Dec. 8, 2011 in this handout photograph released by Syria's national news agency. A pipeline carrying oil from the east of the country to a refinery in Homs was blown up on Thursday.

Black smoke is seen rising from a pipeline in Homs on Dec. 8, 2011. The pipeline was blown up on Thursday, an activist group said.