Philadelphia’s district attorney sued billionaire Elon Musk and his super PAC supporting Donald Trump’s candidacy Monday over the group’s $1 million giveaway to swing state voters, the first known lawsuit over the sweepstakes as the cash prize has come under widespread legal scrutiny.

A group of lawyers who served in Republican administrations contacted the DOJ about the legality of America PAC's $1 million giveaway, prompting the agency to write to Musk's PAC.

Elon Musk’s super PAC didn’t announce a winner for its “daily” $1 million giveaway to registered swing state voters on Wednesday, the same day news broke that the Justice Department warned Musk’s group that its sweepstakes might be illegal.