July 25: Police officers escort alleged smugglers from left to right, Eugenio Quintero, Jose Camacho, Eubidio Quintero and Antonio Balladares.
This undated image provided by the U.S. Border Patrol shows agent Robert Wimer Rosas, who was shot and killed while patrolling.
The FBI is offering $10,000 for help finding the gun of a Border Patrol agent who was slain last week in a rugged area outside San Diego.
The reward offered Wednesday is in addition to a $100,000 payment for information leading to arrest and conviction of anyone responsible for killing 30-year-old Agent Robert Rosas. His body was found in the community of Campo with several bullet wounds.
The FBI says Rosas carried a black Heckler & Koch P2000, a .40-caliber gun.
Mexican authorities have detained five men in connection with the case. They say one of them — 36-year-old Ernesto Parra Valenzuela — carried a 9 mm pistol when he was captured.