He was 31. Monteith was beset by addiction struggles so fierce that he once said he was lucky to be alive.
Monteith, who played the character Finn Hudson on the Fox TV series about a high school glee club, was found dead in his room on the 21st floor of the Fairmont Pacific Rim Hotel on Vancouver's waterfront at about noon Saturday, according to police.
Deputy Police Chief Doug Lepard said there was no indication of foul play. Monteith's body was found by hotel staff after he missed his check-out time, Lepard said.
"We do not have a great deal of information as to cause of death," Coroner Lisa Lapointe said.
Lepard said Monteith had been out with people earlier and that those people are being interviewed.