Explosion at Fort Worth hotel injures at least 20

"This is still a very active scene," Trojacek said. "We have been working in collaboration with ATF, the FBI with our Arson and Bomb Division as well. We have not made a 100% determination, but wanted to make clear that this was some type of gas explosion and we are still working on the details of that to figure out what all caused that at this point in time."