A fourth man has been sentenced for his role in the murder of U.S. Border Patrol Agent Robert Rosas, Jr.
On Thursday, Emilio Samyn Gonzales-Arenazas, 25, was sentenced to 40 years in prison, according to the U.S. District Attorney’s Office.
Agent Rosas was killed on July 23, 2009 in Campo near the U.S.-Mexico border.
In 2011, Gonzales pleaded guilty to murder of a federal officer committed in perpetration of a robbery and unlawful confinement.
Another man, Jose Juan Chacon-Morales, remains at large. There is a $100,000 reward for information that leads to his arrest.
Rosas, 30, had served with the Border Patrol for three years when he was killed. He was survived by his wife and two children.