Bieber posted a video of himself with the music mogul on his YouTube channel in 2009

“You ever seen the movie 48 Hrs? Right now [Justin is] having 48 hours with Diddy, him and his boy,” the rapper says in the video.

“They’re having the times of their lives, like where we hanging out and what we’re doing we can’t really disclose. But it’s definitely a 15-year-old’s dream.”

“I have been given custody of him,” Diddy says. “You know, he’s signed to Usher and I had legal guardianship of Usher when he did his first album. I did Usher’s first album.”

He adds: “For the next 48 hours, he’s with me. And we’re gonna go full. Buck full crazy.”

“Let’s go get some girls,” Bieber tells Diddy when asked what he wants to do.

“Man after my heart,” the rapper responds. “That’s what I’m talking about.”

Justin Bieber (left) and Diddy in 2009 (Justin Bieber/YouTube)

Representatives for Bieber and Combs did not immediately respond to The Independent’s request for comment.

Combs, 54, is credited with helping launch the careers of artists including Biggie Smalls, Mary J Blige and Usher.

The current criminal investigation into Combs is a major escalation in the scrutiny of the music mogul, who has been the defendant in several sexual abuse lawsuits in recent months.

In November of last year, Combs’s former partner, Casandra “Cassie” Ventura filed a lawsuit in which she claimed she was trafficked, raped and beaten by the rapper on numerous occasions over the course of 10 years.

Ventura’s lawsuit was settled a day after she filed it for an undisclosed amount of money.

Another of Diddy’s accusers is a woman who alleges that he raped her two decades ago, when she was 17 years old.

Combs vehemently denied the allegations. In a statement in December, he called the claims “sickening” and said his accusers were “looking for a quick payday”.

“Let me be absolutely clear: I did not do any of the awful things being alleged,” he said in a statement. “I will fight for my name, my family and for the truth.”