Anthony Red Vigeant, a 22-year-old white man, was sentenced to life in prison for the 2007 murder in Long Beach of David Pettigrew, a 22-year-old white man.
Vigeant, a former Marine, will not have the possibility of parole while serving his sentence, authorities said.
Pettigrew was shot to death in his apartment in a dispute over drugs, according to the Los Angeles County district attorney's office. On Monday, Sept. 10, 2007, maintenance workers doing repairs found a door to an apartment ajar and Pettigrew's body inside.
Vigeant and two fellow Marines, all of whom were stationed at Camp Pendleton, confronted Pettigrew about the drugs.
The man who did the shooting -- Ramon Hernandez, a 25-year old Latino -- has pleaded guilty to first-degree murder and testified against Vigeant and the third Marine, Trevor Glenn Landers, according to the district attorney's office.
Landers, a 21-year-old white man, was also convicted of first-degree murder and is scheduled to be sentenced Sept. 2.
-- Robert J. Lopez and Anthony Pesce