A man jailed for the murder of a part-time police officer 32 years ago failed in a bid to have his conviction overturned.
Seamus Kearney's lawyers claimed he was wrongly found guilty of killing John Proctor on the basis of DNA found on cigarette butts recovered from the scene.
Mr Proctor, a 25-year-old RUC Reserve Constable, was shot dead by the IRA minutes after visiting his wife and newborn son at the Mid Ulster Hospital in Magherafelt.
Kearney (57), of Gorteade Road, Maghera, was sentenced to at least 20 years in jail last December for the murder carried out in September 1981.
The Court of Appeal dismissed his challenge.