An explosion erupted as a roaring blaze was reported on a military assault ship at Naval Base San Diego Sunday morning, according to authorities.\r\n\r\n\r\nA fire broke out on the U.S.S. Bonhomme Richard at the U.S. Naval base in San Diego on Sunday, the Navy said.\r\n\r\n\r\nFire on US Navy Ship San Diego \r\n\r\n\r\nThe San Diego Fire Department\u00a0said on Twitter\u00a0that \u201cseveral sailors\u201d were being treated for \u201ca variety of injuries.\u201d\r\n\r\n\r\nAn explosion was reported after the fire started. Smoke was billowing from the middle of the ship, though it was unclear where the fire started or what the source of the explosion was.\r\n\r\n\r\nThe Bonhomme Richard, an amphibious assault ship and light aircraft carrier, was docked for scheduled maintenance between deployments, said Krishna Jackson, a Navy spokeswoman.\r\n\r\n\r\nPlumes of smoke arose from USS Bonhomme Richard as firefighters battled the three-alarm blaze on the 3400 block on Senn St. The vessel is an amphibious assault ship homeported in San Diego, according to Krishna Jackson of Naval Base San Diego.\r\n\r\n\r\nThe ship had undergone a regular maintenance cycle before the fire was reported, Jackson said. Crew members typically are aboard the ship on weekends, but there are fewer than there are on weekdays.\r\n\r\n\r\nFederal firefighters requested assistance from the San Diego Fire Department at about 9 a.m. All SDFD personnel has been accounted for as of 11:19 a.m., the department said.