Maryland State Police arrested one of their own yesterday and charged him with raping an 18-year-old Clinton woman he had stopped for speeding early Friday morning near the Prince George's-Charles County line.

Pfc. Carlton E. DeLeaver, 23, a four-year trooper assigned to the Waldorf barracks three years ago, was charged with first-degree rape.

State Police spokesman Chuck Jackson said DeLeaver stopped the car for speeding at 3:50 a.m. on U.S. Route 301. About 25 minutes later, Jackson said, the trooper was told to investigate a report of an alarm at an industrial area in nearby Waldorf. Jackson said DeLeaver reported in by radio at 4:30 a.m. and told officers it was a false alarm.

An hour later, Jackson said, the Clinton woman, accompanied by a male companion, entered the Waldorf barracks to report that she had been sexually assaulted by an officer after being stopped for speeding on Route 301.

She was taken to Physicians Memorial Hospital in LaPlata for an examination. At 11:30 a.m., DeLeaver radioed the Glen Burnie barracks and turned himself in on Maryland Route 3 south of Route 175 in the Gambrills area of Anne Arundel County.

Later yesterday, a Charles County Circuit Court judge committed DeLeaver, who lives in Crofton, to Crownsville State Hospital for psychological evaluation.

State Police officials suspended him without pay pending further investigation.

The woman who was allegedly speeding and then was sexually assaulted received a warning during the traffic stop.