Forensic technicians and police officers work around the dead body of a man at a crime scene in a neighborhood in Monterrey Feb 9, 2012. Two men were boarding a car when gunmen drove past and killed them, according to local media.[Photo/Agencies]

A police officer stands guard as forensic technicians stand near a taxi with the covered-up body of a dead man inside at a crime scene in Monterrey February 8, 2012. [Photo/Agencies]