LONG BEACH - A husband and wife have been arrested in the March 24 shooting death in Long Beach of a medical marijuana distributor. LONG BEACH - A husband and wife have been arrested in the March 24 shooting death in Long Beach of a medical marijuana distributor.

On Tuesday, Marcel Mackabee was charged with one count of murder, and his wife, Rosemary Sayegh, was charged as an accessory in the killing of Philip Victor Williamson, police said.

Police said robbery was the motive for the killing of Williamson, whom they say may have had $500,000 and seven pounds of marijuana at the time of his death.

Police said more arrests were expected.

The couple, both from Granada Hills, were arrested over the weekend. Sayegh, 32, was arrested in Granada Hills while Mackabee, 29, was apprehended in Chico.

Mackabee is being held on $1 million bail and Sayegh on $500,000. Both are scheduled to return to Long Beach Superior Court on Tuesday.

The 29-year-old victim was gunned down in an alley off the 1500 block of Pine Avenue, police said.

Long Beach Police Department homicide detectives learned that the victim, who was from Los Angeles, delivered marijuana grown in Chico to clinics throughout the Los Angeles area.

Long Beach police said detectives believe the murder was orchestrated for the sole purpose of committing a robbery.

Neither the cash nor the marijuana that Williamson may have carried has been recovered.

Williamson was found by police about 10:30 p.m. on March 24 suffering from a gunshot wound to his upper body. He died the next evening from his injuries.

Long Beach officers traveled to Chico several times during their investigation to search for evidence, police said. That led to a tip that the victim was seen with a man in a black Toyota 4Runner around the time of his death.

Security footage from a Beverly Hills convenience store showed a man in a black sweatshirt and black pants making a purchase and leaving in a black Toyota 4Runner on the day Williamson was killed. A receipt from that store was found in the victim's home.

Police now say that man was Mackabee and the receipt was his.

In late July, detectives traveled to Chico and Granada Hills with search warrants and later made the arrests. The investigation is ongoing.