Suspect showed up to police station with body in car, told officers he killed three more at his apartment, officials say

ROSEVILLE, Calif. – Police in Northern California launched a homicide investigation Monday after a suspect told officers he had allegedly killed four people.

At a news conference, Roseville Police Capt. Josh Simon said the sole suspect was in custody after showing up at the Mount Shasta police department Monday in a vehicle with a body inside. The suspect also told Mt. Shasta police that he had allegedly killed people at his apartment in Roseville.

The bodies of three additional victims were found Monday at the Carmel at Woodcreek West apartment complex on Junction Boulevard, according to Capt. Simon.

Investigators believe the suspect knew his four victims but Simon could not release the identities of any of the victims or the suspect.

The suspect's charges have not been reported.

Roseville officials said they will be reporting additional details Tuesday morning as investigators process evidence at both crime scenes in Roseville and Mount Shasta Monday night.