Children dressed in Halloween costumes look at a crime scene in a neighborhood of Ciudad Juarez, Mexico, on October 31. A municipal police officer and his mother were shot dead at her house by a group of hitmen, according to local media reports.

A boy is vaccinated against Influenza A H1N1 Virus (swine flu) in Ciudad Juarez, Mexico, on March 28.

Friends and relatives of Luis Alberto Vital, 17, mourn over his coffin during a funeral service in the northern border city of Ciudad Juarez, Mexico, Sunday Oct. 24. Vital is one of the 14 victims of the attack on two private homes where about four dozen partygoers had gathered for a teen's birthday on Friday night.

People clean a blood stained patio at a home in the northern city of Ciudad Juarez, Mexico, Saturday Oct. 23. At least 13 young people were shot dead and 15 wounded in an attack on this house late Friday during a 15-year-old boy's birthday party.

A Mexican policeman works in the scene where photojournalist Luis Carlos Santiago, of El Diario newspaper, was killed by gunmen and a colleague from the same newspaper was seriously hurt in a parking lot in Mexico's most dangerous city of Ciudad Juarez, on the US border, on Thursday, September 16, 2010. Santiago, 21, who started working at the newspaper two weeks ago, and fellow photojournalist Carlos Sanchez, an intern, were attacked as they left their offices, according to El Diario de Juarez news director Pedro Torres. Sanchez was seriously wounded. This is the second attack against reporters of El Diario and comes almost a year after the death of reporter Armando Rodriguez who was shot outside his house.