Prince's brother-in-law has claimed that the musician didn't sleep for nearly six and a half days before he died.

The music icon passed away on Thursday (April 21) at his Paisley Park complex in Minnesota.

Speaking at a gathering outside the building at the weekend, Prince's brother-in-law told fans that the musician was suffering from insomnia prior to his death while he worked on music.

Maurice Phillips, who is married to Prince's sister Tyka Nelson, said:

"He worked 154 hours straight. I was with him just last weekend.

"He was a good brother-in-law."

Prince's cause of death looks set to only be known in around a month.

His body was released to his family on Friday (April 22) following a four-hour postmortem, with Prince then cremated.

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