Staffordshire Probation Service has also launched an inquiry as Clarke was under its supervision since being released from Sudbury Open prison, Derbyshire, in 2003 - 16 years into a life sentence for a murder.
Chief probation officer Rob Mandley said: "I can confirm that Mr Clarke was sentenced for murder in 1987 - life imprisonment. He was released from prison in May 2003."
Did anyone try to stop him?
5 hours ago