Update 3:10pm
According to NPR, the Wayne County Medical Examiner has ruled Chris Cornell's death a suicide by hanging. A full autopsy has yet to be completed.
Update 9:52am
Chris Cornell's death is being investigated as a suicide, although police are still saying that it is too early to make a definitive conclusion, according to Variety.
Here is what the Detriot Police told Variety:
At 12 a.m. [local time], we received a 911 call from the MGM Grand Casino Hotel. It appears as though a family friend was checking up on Cornell at his wife’s request. He went to hotel and discovered him unresponsive on the bathroom floor. Police made the location with EMS, and he was pronounced dead at the scene.