Police in Florida said they need the public\'s help in investigating a man who allegedly amassed a stockpile of ammunition and government uniforms. Roy Antiqua, 52, of New Port Richey, Fla. was arrested for allegedly driving without a valid license and violating probation in a grand theft case, the Tampa (Fla.) Bay Times reported Tuesday. The arrest led to the discovery of more than a dozen fake law enforcement and military uniforms as well as fake medical credentials in the vehicle and at the suspect\'s home, police said. Authorities also said they found ammunition for semiautomatic guns and assault rifles. Antigua\'s Cadillac Escalade had a Department of Homeland Security registration sticker and a Coast Guard license plate. New Port Richey Police Chief James Steffens told a news conference Monday the authorities \"need to know from start to finish, who is Roy Antigua,\" The Tampa Tribune reported. Steffens said detectives are working with federal law enforcement agencies, the military, hospitals and other groups in the investigation.