NEW PORT RICHEY — A stranger in a Coast Guard uniform introduced himself to New Port Richey police Chief James Steffens. It was a Memorial Day event at a cemetery. The man said he was Lt. Cmdr. Roy Antigua, and he sat next to the chief in a special section for officials.

"Everybody around there thought that he was the real deal," Steffens said.

But it turns out Antigua is a man of many identities and disguises, none of which appear to be real, authorities said.

"We need to know, from start to finish," Steffens said at a news conference Monday, "who is Roy Antigua?"