A Silver Spring man was arrested Monday on weapon and drug distribution charges after police found a loaded, .45-caliber automatic handgun in his car, and a paper bag with a razor and 78 plastic packets of crack cocaine hidden inside his body, Montgomery County police said.

Robert C. Jackson, 21, of the 2000 block of Dayton Street, is being held in lieu of $50,000 bond in the county jail on three drug-related charges stemming from his arrest at Plyers Mill Road and Metropolitan Avenue in the Kensington-Garrett Park area, court records show.

Sgt. Harry Geehreng, a police spokesman, said the quantity of drugs found inside Jackson was uncommon. "That's a pretty large amount," he said. Police estimated the street value of the drugs at $1,950.

Geehreng said police often encounter suspects who have stuffed drugs or cash into body cavities. "It's a pretty well-known place to hide things," Geehreng said.

In Jackson's case, Montgomery police allegedly found the illegal drugs during a strip search at the Bethesda police station after authorities discovered the handgun in a Mercedes-Benz driven by Jackson. Two police officers stopped Jackson and a companion about 11:45 p.m. Monday in response to a complaint of people being loud and disorderly, police said.

During the strip search police discovered a 3-inch-long "paper lunch-type bag containing a razor blade and a plastic bag with 78 smaller packets of rock cocaine" in Jackson's rectum, according to Ken Berger, one of the arresting officers. The rocks of cocaine were about a quarter-inch in diameter, Berger added.

Court records said police also found $150 in cash and a paging device on Jackson, who is scheduled to be tried Aug. 9 in Montgomery County District Court on a battery charge stemming from a fight in April with a teenager at a park in the neighborhood where he was arrested Monday.

Jackson's companion, Andrew Council, 23, of the 9000 block of 91st Place, Lanham, was arrested Monday on weapon and drug possession and drug distribution charges. He is being held in lieu of $50,000 bond.