One person was killed after an explosion occurred Friday morning in southeastern Mississippi

Emergency responders were still on the scene late Friday morning after being called to aid just after 8 a.m. when the explosion occurred in Wayne County due east of Laurel, Mississippi, along the state’s border with Alabama.

The Wayne County News newspaper reported that residents reported hearing a rumbling noise, then an explosion that shook their houses.

Black smoke could be seen billowing into the sky from approximately 5 miles away from the scene, the newspaper reported.

Exactly what may have caused the explosion to occur or what substance ignited was not immediately known.