Emergency crews in Dallas search the site of an apartment building explosion and major fire, after authorities say the incident has killed at least three people. According to reporting from multiple outlets, firefighters respond to an initial report of a possible gas leak and then the building explodes while crews are investigating. After the blast, a large fire follows, prompting extensive efforts to control flames and conduct site searches. Rescue and recovery teams continue to examine the area for any additional possible victims, while investigators assess what caused the explosion and how it spread. Authorities have not indicated whether they expect to find more victims, but the search reflects ongoing concern that other residents or people could be unaccounted for in the aftermath. Meanwhile, officials continue investigation and coordination at the scene as crews work through damage from the blast and the fire.