David John Chetcuti, a 43-year-old Millbrae Police Department officer, was killed on April 25, 1998, after responding to a distress call from a San Bruno officer who had been fired upon during a traffic stop on Highway 101. The suspect, identified as Marvin Sullivan, opened fire with a high-powered rifle as officers approached; Chetcuti was struck multiple times in the head and chest and died at the scene. Sullivan then took Chetcuti’s weapon and fled but surrendered after a brief chase. Officers found multiple weapons and pipe bombs in Sullivan’s vehicle.

Chetcuti had served 11 years with Millbrae, working as a patrol officer, field training officer, and traffic officer, and was noted for numerous drunk driving arrests and lifesaving actions in prior incidents. Sullivan was later found incompetent to stand trial on three separate occasions and committed to Napa State Hospital. Chetcuti remains the only Millbrae officer killed in the line of duty.