Child killer Aaron Campbell is said to be a 'number one target' when he moves to adult prison next month.

The 22-year-old is currently in Polmont Young Offenders Institution after being found guilty of raping and murdering six-year-old Alesha MacPhail in 2018.

Ahead of moving to HMP Glenochil next month, he is said to be on the radar of 'real hardmen' on the inside who want to target him for his sickening crimes.

READ MORE: Killer Aaron Campbell 'bulking up' in prison gym amid fears he'll be attacked

READ MORE: Aaron Campbell's move to adult prison halted as bosses deem it 'unsafe'

A source at the prison told the Scottish Sun: “He is in real danger — he will need to watch his back every second.

“He’ll be lucky if he goes a week without being attacked.

"There’s real hardmen in here.

"Some have done some pretty bad things but even they’re repulsed by him and what he did.

“Campbell will be the No1 target.”

READ MORE: Aaron Campbell 'pushed' to mix with inmates before move to adult prison

He was supposed to move to Glenochil earlier, but it was put on hold after prison officers were made aware that a family member of Alesha was serving a sentence there and this was deemed a risk to Campbell's safety. 

Campbell was then said to have been trying to 'bulk up' in the Polmont gym after finding out he would soon be moved to an adult prison.

He was treated in hospital last year after being attacked by fellow criminals.

The Scottish Prison Service doesn’t comment on individual cases.