A 61-year-old Prince George's County man was fatally injured last night when the car he was driving was struck by an out-of-service commuter bus at a Clinton intersection, Maryland State Police reported.

Four other persons were injured in the crash, which occurred about 7:20 p.m. at Surratts Road and Branch Avenue, police said.

They said Robert J. Defilippis, of 3857 St. Barnabas Rd., Marlow Heights, was driving west on Surratts Road and had entered the intersection on a green light when the bus, which was northbound on Branch Avenue, hit the side of his car and sent it crashing into a second auto.

Defilipis was pronounced dead a short time later at Southern Maryland Hospital Center.

Two women passengers in the car, Nancy McDaniel, 41, of Waldorf, and Myrtle Thompson, 39, of Avenue, Md., and a Temple Hills couple, Edwin and Helen Vevers, in the second auto suffered a variety of injuries in the crash. All four were listed in fair condition at the hospital early today.

Police said the driver of the Gold Line Service bus, identified as Johnny Rhett Harris, 27, of 1722 H St. SE, was charged with failing to obey a traffic signal.