Four people died in three unrelated traffic accidents late Saturday and early yesterday in the Maryland suburbs, authorities reported.

In Prince George's County, two people died after a head-on collision in the 5700 block of Marlboro Pike just before 10 p.m. Saturday.

County police said a car driven by Gregory York, 23, of Nova Avenue in Capitol Heights, crossed the center line for an unknown reason, sideswiped another car and collided head-on with a third.

York and the driver of the third car, Viola L. Harvey, 58, of Merritt Street in District Heights, were fatally injured, Prince George's police said.

They said at least one other person received minor injuries, but police could not say whether any of the victims had been wearing a safety belt.

In Montgomery County, an unidentified pedestrian was killed about 8 p.m. Saturday when he was struck by a car at Bel Pre Road and Rippling Brook Drive in northern Wheaton, county police reported.

The victim, a 6-foot, 220-pound, middle-aged man wearing blue shorts and a white "Aspen Hill Racquet Club" T-shirt, apparently failed to see the car while he was jogging, entered the intersection, and was thrown about 75 feet upon impact.

He was flown to Suburban Hospital, where he died just after 11:30 p.m. Saturday, police said.

They are asking for help in identifying the man.

County police declined to release the name of the driver of the car, and no charges have been lodged in the case.

In Annapolis, city police say they responded to a report of an injured man on Forest Drive about 3 a.m. yesterday and found a man's body lying in the street near a bicycle, between Newtowne Drive and Green Briar Lane.

The victim, whose identity was being withheld pending notification of family, was declared dead at the scene.

Police listed the death as suspicious and said it was being investigated yesterday by their criminal division.

They said the body would be taken to the medical examiner's office in Baltimore for an autopsy.