A man robbed a vulnerable neighbour at knifepoint and threatened to "stab him like a pig".

Aaron Wallace found the man, who has a learning disability and mental health issues, sitting reading a magazine in the close of the block of flats where they both lived on Old Halkerton Road in Forfar, Angus.

Wallace verbally abused his neighbour before pulling out a knife and following him into his home.

He then demanded cash as well as the man's bank card and PIN.

Wallace held the knife to the victim's chest and told him not to phone police.

Fiscal depute Nicola Gillespie told Dundee Sheriff Court the 26-year-old was left "traumatised" by his ordeal and had to move home as a result of the attack.

She said: "The accused said he was going to 'stab him like a pig' and said to hand over his money."

Wallace, 33, a prisoner at HMP Perth, pleaded guilty on indictment to a charge of assault and robbery committed on July 6 this year.

Sheriff Alastair Carmichael deferred sentence until next month for social work background reports and remanded Wallace in custody meantime.

He said: "Custody is the most likely option here."