Police: Justin Bieber murder plot foiled by convicted murderer who planned it behind bars

Justin Bieber was reportedly the target of a murder plot hatched by a convicted killer behind bars.

Investigators say he had every detail planned, down to the ties his recruits would use to strangle the pop star and three other people.

Investigators say Mark Staake and his nephew Tanner Ruane planned to take down the teen sensation.

Turns out their Bieber fever started long ago at the state prison near Las Cruses.

That's where Staake met Dana Martin, a convicted killer serving two life sentences for raping and killing a 15-year-old girl in Vermont in 2000.

Martin recruited Staake, who in turn recruited his nephew to carry out four murders after Staake got out of prison.

Cops say Martin asked the two to first go to Vermont and take out two former acquaintances.

Martin gave strict orders to strangle the victims with a Paisley tie, the same kind martin used as his calling card.

And here's where things get grisly. Tanner Ruane was in charge of castrating the victims.

Martin told cops there was a bigger plot - the murder and castrating of Bieber and his bodyguard.

Turns out Martin is obsessed with Bieber. He's even got a tattoo of the superstar on his leg.

Staake was arrested in Vermont on outstanding warrants before carrying out any of the killings.

But his nephew was let go.

Cops recorded phone calls where Ruane, who made it to New York, tells Martin he's disappointed he couldn't carry out the murders.

It was Martin who reportedly blew the whistle on the other two men and foiled the plot he cooked up.

A spokeswoman for Justin Bieber tells CNN "we take every precaution to protect and insure the safety of Justin and his fans."