The former foster son of Vancouver Mayor Gregor Robertson — wanted on drug trafficking and weapons charges — is in police custody, RCMP say.

Jinagh Navas-Rivas surrendered to police in Richmond, B.C. Thursday, RCMP Sgt. Peter Thiessen said.

A warrant was issued for the arrest of Navas-Rivas, 21, and four other men last week after cocaine-trafficking charges were laid against them. He also faces a charge of illegally transferring a handgun.

One of the other wanted men, Vinh Hoang David Le, 25, also gave himself up Thursday in Vancouver, Thiessen said.

Navas-Rivas lived with Robertson and his family between 2007 and 2009.

After police announced the arrest warrant Dec. 29, Robertson issued a statement urging Navas-Rivas to surrender.

Navas-Rivas was seen celebrating with Robertson after he was re-elected in November.

Two other men named in the arrest warrant are still at large.