A man is being questioned today about the murder of an RUC officer in the North in 1981.
Reserve Constable John Proctor (25), was shot dead by the IRA in the car park of the Mid Ulster Hospital in Magherafelt, Co Derry after visiting his wife who had just given birth to a baby boy.
Just hours before he was ambushed on September 14th 1981, he had been a pallbearer at the funeral of a UDR soldier friend shot dead by an IRA gunman in a neighbouring village of Maghera two days earlier.
Police said a 54-year-old man was arrested today in Swatragh, south Derry.