San Bernardino County Sheriff’s Department

Press Release

DATE/TIME: July 28, 2016, at approximately 12:07AM

INCIDENT: Grand Theft Auto, Possession of Stolen Vehicle

LOCATION: Mt. Vernon Ave/Barton Rd. in the city of Grand Terrace

SUSPECT(S): Marcos Martinez Alfonso, age 19 a resident of Colton

VICTIM(S): Confidential


On July 28, 2016, at approximately 12:07 a.m., Deputy Tabor from the San Bernardino County Sheriff’s Central Station (Grand Terrace Police), ran a records check on a red 1991 Dodge Ram Pickup The vehicle was reported stolen on July 26, 2016, out of the Rialto Police Department area.  The driver/suspect Marcos Martinez Alfonso, pulled into a driveway when Deputy Tabor activated his emergency lights and siren.  Alfonso attempted a U-turn in the driveway, but due to the vehicles size he was unable to complete the turn.  Deputy Tabor and assisting Deputy Carrico were forced to make contact with Alfonso as he was attempting to make the U-turn, to prevent a potential vehicle pursuit.  Alfonso was taken in to custody without further incident.  Alfonso also had an active felony warrant for Possession of Stolen Vehicle.  Alfonso was arrested and booked into Central Detention Center for Grand Theft Auto, Possession of Stolen Vehicle and his active felony warrant for Possession of Stolen Vehicle.

Anyone with information regarding this incident is urged to contact Central Station at (909)387-3545. Callers wishing to remain anonymous are urged to call We-Tip Hotline at 1-800-78-CRIME (27463) or you may leave information on the website at

Refer: Deputy Tabor

Station: Central Patrol (Grand Terrace Police)

Case #: 121600602

Phone No. (909) 387-3545

John McMahon, Sheriff-Coroner

San Bernardino County Sheriff-Coroner Department

Sheriff’s Public Affairs Division

655 E. Third Street

San Bernardino, California 92415-0061

Telephone: (909) 387-3700