Slain 'A.I.' Contestant Drunk, Suspect Says

7/29/2009 6:01 PM PDT

Slain 'A.I.' Contestant Drunk, Suspect Says

The drunk driver charged with killing "American Idol" contestant Alexis Cohen in a hit-and-run last weekend says he's prepared to defend the case in part by questioning Cohen's sobriety at the time she was struck.

David Glassman -- attorney for 24-year-old Daniel Bark -- tells TMZ, "We're going to put a blanket not guilty plea on all counts."

Bark -- who's on suicide watch in a New Jersey jail -- is charged with aggravated manslaughter and vehicular homicide... as well as eluding police and leaving the scene of a crime. Cops say Bark struck Cohen while fleeing police after hitting a parked car -- just minutes before.

But Glassman says there's a huge gap with respect to when Bark allegedly struck the victim.

Bark is alleged to have killed Cohen with his 2005 Mitsubishi Galant.