A gas leak was reported at the apartment complex on Thursday, authorities said.May 28, 2026, 5:54 PMEmergency responders are searching for any victims after a massive fire tore through an apartment complex in Dallas on Thursday after a possible explosion, authorities said.The blaze broke out shortly before 1 p.m. local time and continued to "escalate and upgrade" to a fire-alarm fire, according to Dallas Fire Rescue Assistant Chief James Russ.A gas leak was reported at the apartment complex at 12:47 p.m., according to Russ. The fire may have been caused by an explosion, though the cause is under investigation, according to city officials. Police and firefighting crews respond to the scene of a large fire at an apartment complex in Dallas, Thursday, May 28, 2026. (AP Photo/Gabriela Passos)Gabriela Passos/AP Photo/Gabriela PassosNeighbors told ABC Dallas affiliate WFAA they heard a "very big explosion" and "loud boom," then heard people screaming and saw smoke. One neighbor told the station the windows in her apartment were blown out, while another said he could feel the ground shake.The fire has since been contained, and firefighters are conducting searches of the site and using a drone to canvass the area for any victims, Russ said. News footage from the scene showed crews sifting through the debris.A large fire burns at an apartment complex in Dallas, on May 28, 2026.@synergistic_fit_live/Instagram. Four people were transported to the hospital, he said. No information was provided on their conditions. Popular ReadsAt this time, it is "unknown how many possible fatalities we may have," Russ said at a press briefing Thursday afternoon.Dallas Mayor Eric Johnson noted during the press briefing that it was the first day of summer vacation for the Dallas Independent School District."We need to pray for these folks who are affected by this and for our entire city," Johnson said.