Rescuers were going door-to-door Thursday morning in neighborhoods decimated by the explosion at the West, Texas, fertilizer plant, searching in closets and under beds for residents after a massive blast that killed as many as 15 people and injured more than 160, officials said.
Three or four firefighters who are among the missing "were our first responders," Waco police Sgt. William Swanton told reporters at a news conference early Thursday. "They were the ones who went to the scene … and were actually fighting the fire as the explosion occurred."
One volunteer firefighter who was previously listed as missing was found at an area hospital, but his condition as unknown, Swanton said.