29-year-old Philip Victor Williamson of Los Angeles who was murdered on March 24th, 2011 at approximately 10:26 p.m.
29-year-old Philip Victor Williamson of Los Angeles who was murdered on March 24th, 2011 at approximately 10:26 p.m. (Submitted photo)

LONG BEACH >> A Granada Hills man was convicted Friday of first-degree murder in the robbery-motivated killing of a medical marijuana distributor whose body was found in a Long Beach alley.

The Long Beach Superior Court jury deliberated about three hours before finding Marcel Maurice Mackabee, 31, guilty of the March 24, 2011, shooting of Phillip Williamson.

Jurors also found true a special circumstance allegation that the 29-year-old West Los Angeles man was murdered during the commission of a robbery.

Judge Arthur Jean immediately sentenced Mackabee to life in prison without the possibility of parole.

Mackabee's cousin, Charles Mackbee, 43, and a third man, Kenneth Johnson, 37, both of Long Beach, are awaiting trial in September for Williamson's killing. They could also face life in prison without the possibility of parole if they are convicted.

Williamson -- who picked up marijuana from northern California and sold it in large quantities to medical marijuana dispensaries -- was shot once in the back of the head and dumped in an alley in the 1500 block of Pine Avenue. He died a day later.

Authorities believe that Mackabee, who had met the victim through a mutual friend, drove Williamson to Long Beach under the guise of a marijuana deal and that Mackabee returned to the victim's apartment to retrieve more than $100,000 in cash after the victim was shot by one of the other two men, according to Deputy District Attorney Rachel Hardiman.

Mackabee's attorney could not be reached for immediate comment on the case.