Police found 89 pounds of marijuana worth $400,000 and arrested six people, including rapper Gillie Da Kid after two FBI agents canvassing a neighborhood for an earlier cocaine case got a tip leading them two nearby homes, authorities said yesterday.

The ringleader of the operation was identified as Sar'd Nasir, aka Gillie Da Kid, whose promotional posters feature him surrounded by pot plants.

Capt. Chris Werner of the police Narcotics Field Unit 2 said the bust underscored the high level of cooperation between his officers and the FBI's Squad 3 in drug investigations.

Werner said FBI Agents Garrett Kerley and Lynn Monahan went to Levick Street in Oxford Circle on Tuesday to talk to residents in an ongoing investigation of a $6.1 million stash of crack cocaine seized there in December.

During the canvass, a resident directed the agents to two homes on the 1100 block of Passmore Street.

The agents notified their counterparts in Unit 2 - Sgt. Robert Friel and Officer Jeff Galaska - and set up a stakeout, Werner said.

After one man drove up and left one of the houses with some boxes, the team notified Highway Patrol, which stopped the car, police said.

The team then obtained search warrants, found the marijuana in the car and in the houses, and arrested the suspects, who were charged with drug offenses, Werner said.