The psychiatric hospital from where a killer escaped will investigate how it happened as a matter of urgency.
Phillip Westwater was detained under the Mental Health Act twenty years ago - after leaving a man paralysed after slashing his throat.
He also killed another man whilst in another secure hospital.
You can watch the lunchtime update from Kenny Toal below.
A convicted killer dubbed the 'Black Dog Strangler' has been found and returned to a secure hospital after a day on the run.
A convicted killer, who was dubbed the Black Dog Strangler, has escaped from a secure hospital, Northumbria Police said.