The former Navy SEAL who says he killed Osama bin Laden is denying a drunken driving charge filed against him in Montana.

Authorities say O'Neill was charged after officers found him asleep early Friday in a running vehicle and he refused a test to determine his blood alcohol level.

O'Neill released a statement through a public relations firm late Friday afternoon that says he took a prescribed sleep aid to help him with severe insomnia.

The statement says he is innocent of the charge and is pleading not guilty.

He also thanked police for their professionalism and courtesy.