Christian Daniel Castro Alvarez pleaded guilty in November to murdering a federal officer near Campo, about 60 miles east of San Diego. He told authorities that he and others were attempting to rob the agent, Robert Rosas.
Prosecutors have recommended that U.S. District Judge M. James Lorenz commit Castro to 40 years in prison on
Thursday, while a probation officer has urged a life sentence. Federal guidelines call for a minimum sentence of 30 years.
Rosas, 30, was the first Border Patrol agent to be killed by gunfire since 1998, according to The Officer Down Memorial Page, a website that tracks death of law enforcement officers.
Rosas was shot repeatedly from behind and then while he was lying on the ground, according to prosecutors.
U.S. authorities say Castro acted with others but have not said how many or announced arrests. The suspects are believed to have fled back to Mexico through a small crevice under a border fence made of corrugated metal, sparking a massive search on both sides of the border.
Castro surrendered to authorities at a San Diego border crossing in August, less than a month after Rosas died on the night of July 23, but his capture was not announced until he pleaded guilty three months later. He was charged as an adult.
Source: Elliot Spagat for Yahoo! News AP.