Guerrero, who celebrated his 30th birthday on Wednesday, was picked up reportedly carrying an unloaded .40-caliber semi-automatic Smith & Wesson handgun. He had no ammo on him and was held at the Port Authority police station at the airport.
The 5-foot-9 southpaw is slated to fight reigning WBC welterweight champ Floyd Mayweather Jr. for the title in Las Vegas on May 4.
Details of the arrest were not immediately available and the exact charges against the California resident are pending, said sources.
Guerrero (31-1-1, 18 KOs, 2 NCs) — the interim WBA champion — said the "media knows I'm a hunter and requested he bring it for a photo op."
