PULLMAN, Wash. -

Pullman police are continuing their search for the suspects involved in the assault of WSU professor Dr. David Warner, who was found unconscious in the parking lot of Adams Mall early Saturday morning.

To aid in the effort to identify the suspects who assaulted Warner, police have released surveillance video of the incident. Since the police have suspects but haven't been able to identify them they're hoping these video will help.

The first video released shows the three suspects before the assault walking around and wearing dark clothing. The second video shows a fourth female suspect walking from right to left and wearing a sweater around her waist.

The suspects in Warner's assault could be facing some serious charges.

"We have at least, at minimum a felony assault. If his condition worsens it could be a homicide investigation," Pullman police commander Chris Tennant said.

Pullman police are hoping this new video will help generate new information on the identities of the suspects. If you have any information on the case you're asked to contact the Pullman Police Department.

Warner, meanwhile, remains in critical condition in the intensive care unit at Sacred Heart Medical Center in Spokane.

Warner teaches American studies at WSU. His friends and family set up a Facebook page called Rally for David Warner. On that page there is a link for community members to help donate to pay for his hospital bills.