According to the Los Angeles Times, authorities on Friday were trying to determine why former WARRANT singer Jani Lane was at a Woodland Hills, California motel when he died Thursday.Lane has a home in Redondo Beach, approximately 27 miles south of the location where he was found, so it is unclear exactly why he was at the Ventura Boulevard motel, according to law enforcement sources familiar with the case. Alcohol and prescription drugs were found in the motel room, the sources said, but there was no indication he intentionally took his own life. The source spoke to the Los Angeles Times on the condition of anonymity because the case is still under investigation. Jani Lane's older sister, Vicky Oswald-Ley told RadarOnline.com that neither Lane's wife of a year, Kimberly, nor his manager have contacted the family since the singer's body was found. "It would be common courtesy to call," she said. "We don't even know if there's a service. "Why was he in a hotel? Why was he away from her (his wife)? Why was there isolation?" asked Vicky. "We have so many questions and don't know where to turn for answers." An autopsy performed Friday on Lane proved inconclusive pending the results of toxicology tests, according to the Los Angeles County coroner's office. Assistant Chief Coroner Ed Winter says it may take seven or eight weeks to finalize the cause of death. Lane was pronounced dead by Fire Department personnel who responded to a call shortly before 5:30 p.m. in the Comfort Inn in the 20100 block of Ventura Boulevard in Woodland Hills, California, the Los Angeles Police Department said. "He was discovered unresponsive," said Winter. Lane's family will convene Sunday for a private memorial service, the singer's manager and longtime friend Obi Steinman told the Associated Press. A public memorial with performances by fellow metal rock bands including GREAT WHITE and L.A. GUNS will be held in Hollywood on August 24 at a venue to be announced later, he said. Jani is survived by his wife, Kimberly; a brother, Eric; three sisters, Marcine Williams, Michelle Robinson and Victoria Oswald; a daughter from his first marriage, Taylar Lane; a daughter from his second marriage, Madison Lane; and two stepdaughters, Ryan and Brittany.