Houston, Seven people, including four firefighters, were injured following a gas explosion at an apartment complex in Dallas, a major city in the US state of Texas, authorities said.

Firefighters responded to a 911 call around 10:30 a.m. local time for a gas leak and arrived to “a strong smell of gas,” Dallas Fire Rescue spokesperson Jason Evans said.

“At some point during the course of the investigation, an explosion took place,” he said.

The explosion caused a partial collapse of the two-story apartment building, according to a USA Today report.

(EW Correspondent)