Prince stayed awake for 154 hours before his death, his brother-in-law has claimed.

Maurice Phillips reportedly claimed the 57-year-old singer had worked for six days without sleep when friends and family held a private service at the compound on Saturday.

Mr Phillips, who is married to Prince's sister Tyka Nelson, is said to have told fans outside Paisley Park: "He worked 154 hours straight. I was with him just last weekend. He was a good brother-in-law."

The mayor of Chanhassen, the city which is home to Paisley Park, where Prince lived, said discussions were taking place to stage a public service in honour of the superstar.

"It's clear his friends and family would support the idea," Denny Laufenburger said.

A private funeral service at a local church is expected to take place in early May, he added.

Prince was found collapsed in a lift by staff members on Thursday morning, more than 12 hours after he was last seen alive when he was dropped off at Paisley Park.