A 25-year-old Pullman man was found dead in his home Sunday afternoon on the 1300 block of Northwest Kenny Drive.
Police Cmdr. Chris Tennant said there were no indications of either homicide or suicide and it appeared the man died in his sleep.
He is the second young male adult to be found dead under similar circumstances in Pullman within the past five weeks.
Twenty-one year old Brock Danual Scott Lindberg, a Washington State University student from Wenatchee, was found unresponsive in his bed Oct. 24 at the Pi Kappa Phi Fraternity house on College Hill.
Tennant said it could be months before toxicology results on either man are complete.