NEW ORLEANS AP – A powerful plaintiff has joined the hundreds of people and businesses suing BP and other companies involved in the Gulf oil spill: the Justice Department.

The government, in an opening salvo in its effort to get billions of dollars for untold economic and environmental damage, accuses the companies of disregarding federal safety regulations in drilling the well that blew out April 20 and triggered a deadly explosion on the Deepwater Horizon rig. Wednesday’s lawsuit is separate from a Justice Department criminal probe that has not resulted in any charges.