JAY, Maine (AP) A dozen state and federal investigators are beginning their investigation into the cause of an explosion at a paper mill in Maine.

The blast shook the ground on Wednesday in Jay and sent a plume of smoke into the air that could be seen for miles around. Yet no one was seriously injured.

The investigation into the cause of the blast is being led by a team of investigators from the Maine Fire Marshal’s Office and the federal Bureau of Alcohol, Tobacco, Firearms and Explosives.

The Androscoggin Mill changed ownership in February when it was sold by Ohio-based Verso to Pennsylvania-based Pixelle Specialty Solutions.