A Bellmore man used a fake state pistol permit and posed as a federal agent when purchasing a handgun in the parking lot of a fast-food restaurant in a Hudson Valley village, State Police said Friday.

Richard J. DeRosa, 41, was arrested Wednesday by State Police in Montgomery and Long Island, the FBI and the Orange County district attorney's office on felony charges of criminal possession of a firearm and first-degree criminal impersonation.

advertisement | advertise on newsday

DeRosa was remanded to the Orange County jail at his arraignment Thursday in the Town of Montgomery Court, State Police said.

Town officials said he was released on $10,000 cash bail Thursday and is due back in court on June 4.

A "lengthy investigation" revealed that sometime in November 2013, DeRosa using a fake state pistol permit, purchased a Smith & Wesson .357 revolver in the parking lot of McDonald's on Route 208 in the town of Montgomery, according to a news release.

DeRosa had contacted the seller via the Internet and set up the purchase of the gun, inferring that "he was a special agent for the federal government and possessed a valid pistol permit in New York," the release said.

advertisement | advertise on newsday

A search warrant was executed at DeRosa's home, where "several items of evidence were recovered," police said.