U.S. Border Patrol agents file past a portrait of fellow agent Robert Rosas before the start of his memorial service on July 31, 2009 in El Centro.
Nearly a year after a teenager admitted his role in the murder of a U.S. Border Patrol agent, Tijuana police arrested a second man in connection with the crime.
Border Patrol Agent Robert Rosas was shot four times in the head the night of July 23, 2009 near Campo, east of San Diego. He was also shot once in the neck and three times in the torso.
On Monday, police in Tijuana said the FBI offered information that led to the arrest of 26-year-old Marcos Manuel Rodriguez Perez in connection with Rosas' death.
Christian Daniel Castro-Alvarez, 17, admitted entering the United States illegally from Mexico to rob a Border Patrol agent of government property, according to prosecutors.
Authorities said Castro-Alvarez lured the father of two young children out of his car and struggled with him over a firearm.
The plea deal included language that Agent Rosas was shot multiple times by Castro-Alvarez and one or more of the co-conspirators.
Rosas was tracking suspected undocumented immigrants near the border and called for backup. When the group he was following split up, Rosas went after some suspects by himself, according to a Border Patrol spokesperson. Other agents lost contact with him and later found his body on the Shockey Truck Trail.
Rosas, 30, had served with the Border Patrol for three years. He is survived by his wife and two children.