A search warrant was issued Thursday in the investigation of the death of Prince, TheWrap has learned.
Minnesota's Carver County Police Department issued the warrant, but the contents of the search warrant have been sealed.
This is because "premature disclosure of the details provided in the search warrant and its accompanying documents may compromise this law enforcement investigation by causing the search or related searches to be unsuccessful," according to the county attorney's office's motion to seal the warrant.
The motion also mentioned "continued intense media scrutiny" as a reason for sealing the document and subsequent results.
The investigation into Prince's death is reportedly focusing on the role that drugs may have played in both his death and his medical emergency the week before in Moline, Illinois.
The Star Tribune in Minneapolis reported Monday night that a longtime attorney for two of Prince's siblings has told authorities that he learned from them over a decade ago that Prince had "substantial" drug problems, specifically with the opioid painkiller Percocet and cocaine.
The results of Prince's autopsy have not yet been released, nor has an official cause of death -- which may take days or weeks depending on the type of testing.
TMZ reported that the legendary musician was hospitalized after overdosing on Percocet the week before his death. The singer was reportedly administered a "save shot" at a hospital in Moline, Illinois, after his private plane was forced to make an emergency landing during a flight from Atlanta to Minnesota. The treatment is frequently used to mitigate the effects of opiates.
Prince's life and his music were celebrated in a private memorial service in Minnesota on Saturday shortly after his remains were cremated.