A 40-year-old Glen Burnie man was arrested yesterday and charged with intent to murder a Maryland state trooper who was shot four times while questioning a motorist in Anne Arundel County Monday night, police said.

David Albert Pfeiffer - police were unable to provide an address as of late yesterday - was arrested four hours after Maryland state and Anne Arundel County police found what they believe to be the assailant's blood-soaked getaway car in the northern part of the county, police said.

Pfeiffer was found to be "injured" when he was arrested, police said, but they declined to discuss the nature of his injuries. A University Hospital spokesman in Baltimore said yesterday, however, that Pfeiffer was admitted to that facility suffering from gunshot wounds to the groin and leg.

Police spokesmen had said earlier that they had reason to believe that whoever shot the state trooper had himself been wounded in an exchange of gunfire.

Trooper Gregg A. Presbury, 27, continued to be listed in critical condition yesterday in the Baltimore shocktrauma unit after having been shot during the process of making what police described as a "routine traffic stop" of a motorist along a dark stretch of Maryland Rte. 3.

According to police, the incident began at approximately 11:20 p.m. Monday when Trooper Presbury stopped a car heading north on Rte. 3 near its intersection with Route 100 in Anne Arundel County.

Police said Presbury radioed headquarters for a license check of the vehicle and moments later requested a back-up unit because he said he felt that something was "suspicious."

Two minutes later, Presbury was discovered in a pool of blood about 30 feet behind his car by a motorist, who used the trooper's radio to call for help. The police spokesman said the motorist also reported seeing a man running from the area toward a nearby car.

Police arrived moments later and began a massive air and land search for the car bearing the license number that Presbury had asked to have checked. At the same time, the trooper, who was shot once in the head, neck, left shoulder and right side, was rushed to the shock-trauma center in Baltimore.

Police said the scene of the shooting indicated that there was a shoot-out and there was a possibility that assailant had been wounded because the trooper's revolver had been fired six times and because two different blood types were identified from stains at the scene.

A bloodstained car believed to have been the getaway vehicle for the gunman was found yesterday afternoon by state police near a Pasadena, Md., auto body shop.

Police said the floorboards of the car were covered with blood. They said that fingerprints lifted from the car led them to stake out a location in Glen Burnie. It was there, police said, that the suspect was arrested shortly before 6 p.m.