Authorities have resumed the transfer of an estimated 6 million pounds of improperly stored explosive material at a northwest Louisiana industrial site, according to a report from The Associated Press.

State police say the movement of the explosive “M6” propellant began again at daybreak Monday at Camp Minden in rural Webster Parish after being suspended before nightfall, the report states. Residents of the nearby town of Doyline were advised to leave the area Friday before the transfer, which began Saturday.

Police estimate that about half of the town’s 800 residents voluntarily evacuated, AP reports.

The material was stored on property leased by Explo Systems Inc., which became the subject of a criminal investigation following an October explosion, AP reports. State police say they found material improperly stored both outdoors and in unauthorized buildings.