ONE of Scotland’s youngest killers has been found dead in custody at HMP Castle Huntly.

Thomas Shields was 15 when he murdered James Herd, 27, at a bus stop in Glasgow in March, 2003.

Both men lived in Garthamlock.

The killer was jailed for life in March 2004 and ordered to spend a minimum of 18 years in prison before he could apply for parole.

The Scottish Prison Service confirmed Shields, 30, died while he was in custody at the open prison in Dundee.

A spokesman said: “Police Scotland have been advised and the matter will be reported to the procurator fiscal."