Diamond Bar robbery murder update Posted on December 4, 2007 by Frank Girardot This is the latest bulletin from the Sheriff’s Department regarding the Diamond Bar murder of a man early Tuesday morning. Deputies are searching for a suspect or suspects, who should be considered armed and dangerous. They apparently fled in the victim’s car — a 2004 silver four-door Mercedes-Benz E320, California license number 5GPF292, Sheriff’s Deputy Oscar Butao said. At left is a 2004 E320.