JAIL security has been increased around the Southport killer — who can only leave his cell accompanied by four prison officers.

Axel Rudakubana is locked up for up to 23 hours a day amid fears the damning inquiry into his attack could trigger him into further violence.

The 19-year-old is serving life with a minimum of 52 years.

This week an inquiry said the 2024 stabbings would have been averted if his parents had reported him.

And his innocent victims — Bebe King, six, Elsie Dot Stancombe, seven, and Alice Da Silva Aguiar, nine — were also failed by public bodies, including the police.

Rudakubana, who previously threw boiling water at a prison officer, is held on a “safe systems” regime at HMP Belmarsh in South East London.

That means he can only move around under a secure escort of at least four officers.

A source said: “They are taking no chances with him due to the inquiry and his history of violence.

“Prison officers are frightened of him and rightly so.

“They fear he could make a weapon or try another attack like the one he carried out.

“He is deemed a massive danger so they will only unlock his door when they are mob-handed to make sure they can control him if he tries anything.

“At least one of the officers will have a body-worn camera every time they interact with him as well.

“The inquiry into his attack is seen as a potential trigger, which makes an inmate more dangerous.

“Rudakubana has also not changed at all, despite all the sessions with psychologists and therapists.

“He is seen as likely to commit further attacks in jail.

“It means that he is kept in his cell for 23 hours per day a lot of the time because — due to resources — it takes so many staff to unlock him and takes them away from other duties.”

We told how in May last year a guard needed hospital treatment after being scalded by boiling water hurled by Rudakubana.

The fiend has since been banned from having a kettle in his cell.