Emergency calls were made from Prince’s Paisley Park complex 46 times in the past five years, it has been revealed.
A log released by Minnesota authorities showed the 911 calls related to everything from medical emergencies to false fire alarms.
It included one call in 2011 in which an unidentified woman said she was concerned about Prince’s cocaine use, but no police action was taken.
Prince’s representatives have not commented on the claims.
The unnamed woman, from Germany, claimed Prince told her a year earlier that he had an uncontrollable cocaine habit and that she should advise the authorities.
Prince was found unresponsive in a lift at his Paisley Park complex – home to recording studios, a nightclub, rehearsal space, offices, and the singer’s private residence – on 21 April.
A post-mortem examination last month discounted suicide, but a medical examiner said full results could take several weeks.
Investigators are looking into whether Prince died from an overdose and if a doctor was prescribing him drugs in the weeks before his death.
They are also trying to establish whether a doctor was on the singer’s plane when it made an emergency landing less than a week before he died.
The musician was found unconscious on the plane after it stopped in Moline, Illinois, on 15 April, and detectives investigating his death have asked to see fire and ambulance records related to the emergency landing.
