Authorities are working diligently to determine exactly why former Warrant singer Jani Lane was alone at a Comfort Inn motel in Woodland Hills, Calif. when he died on Thursday (Aug.11). The '80s glam scene icon owned a home in South Bay, which is only about 30 miles away.

The L.A. Times also reports that the cause of Lane's death is still a mystery. An initial autopsy was inconclusive, and toxicology reports won't be returned for at least another four to six weeks.

Lane, 47, was found dead at approximately 5:30PM PT on Thursday. Alcohol and prescription drugs were found at the site. He was unresponsive when he authorities arrived.

Lane's manager and longtime friend Obi Steinman told the Associated Press that private memorial services will be held tomorrow (Aug. 14).

A public memorial, including performances by fellow '80s bands Great White and L.A. Guns, is slated for Aug. 24 in Hollywood. The venue for that celebration of Lane's life and work will be announced shortly.

Lane's sister Vicky Oswald-Ley has said that her brother had been battling alcoholism for quite some time, and that she and her family were not contacted immediately by Lane's widow Kimberly or by Steinman in the wake of the singer's passing.