An investigation continues into a deadly Oak Cliff apartment explosion that killed three people after a construction crew struck a gas line, leaving residents displaced and building owners searching for answers.

The Dallas fire chief says firefighters were preparing to evacuate residents due to a reported gas leak when an apartment building exploded, killing at least three people and injuring five more.

The number of victims could change as details continue to unfold and crews search through the debris.

The exact nature of the damage, and what contingencies are in place to deal with it, have not been made clear.

Salina was shaken by a powerful fireworks factory explosion on Monday morning, sending dense clouds of smoke billowing into the sky and damaging properties in the surrounding areas. Two farmers and a food courier were slightly injured by the blast, and four cows were killed.

Geoff Henley, who represents the Clyde apartments, said photos showed an Addison-based company's truck was at the site in Oak Cliff.