A Jamaican fugitive sought in the slaying of four people at a Los Angeles birthday party in October was added Thursday to the FBI’s most wanted list.

Marlon Jones, who is described as “armed and extremely dangerous,” fled following the Oct. 15 shooting at a home that was temporarily converted into a restaurant. He is believed to be a member of an East Coast Jamaican gang dealing in illegal marijuana, and was visiting Los Angeles from New York at the time of the violence.

He is described as a black male in his 30s or 40s, about 5-foot-9 and 160 to 170 pounds.

Jones is the 510th person ever added to the Ten Most Wanted list since the FBI unveiled it in 1950.

In May, Federal authorities captured Most Wanted felon Philip Patrick Policarpio in San Ysidro as he was crossing into the U.S. from Tijuana.

The FBI added him to their last after he was accused of shooting his pregnant girlfriend in the head during an argument at a party.

The FBI announced a reward of up to $100,000 for information leading to the arrest of Marlon Jones.

Some of his aliases are Rasheen Brantley, Floyd Evans, Floyd Evans Jr., Anthony Howard, Philip L. Schepacarter, Anthony Winter, Anthony Wynter and “Junior,” the FBI said.

The FBI’s Ten Most Wanted Fugitives list has been in existence since 1950, the FBI says in an FAQ about the list. The Criminal Investigative Division at FBI headquarters seeks nominations from the agency’s 56 field offices. The CID agents and the agency office of public affairs review the names and the FBI’s executive management gives final approval.