Man sold , fireworks, guns and flash powder to undercover agents The Bureau of Alcohol, Tobacco, Firearms and Explosives says it has made the agency’s biggest explosives haul ever in the District in an operation dubbed “Born on the Fourth of July.”

Undercover agents had been buying thousands of dollars in explosives, commercial fireworks and handguns for the past month but decided to make an arrest and confiscate the rest of the explosives Friday after they realized how much of the dangerous materials the suspect had stored in his apartment, an ATF spokesman said.