Robert Morrison murdered Michael Drummond in party row
A man who stabbed his teenage friend to death during a row at a party in South Lanarkshire is facing a life sentence after being convicted of murder.
Robert Morrison, 22, stabbed 19-year-old Michael Drummond four times at a house in Hamilton in January.
He claimed to have acted in self defence after Mr Drummond produced the knife which he managed to grab.
Morrison will find out next month how long he must serve of his life sentence before he can apply for parole.
The High Court in Glasgow heard how a row broke out between Morrison and Mr Drummond at the property in Neilsland Street on 8 January.
Morrison stabbed his victim in the stomach, neck, shoulder and head. The knife wound to Mr Drummond's neck was seven inches deep.
Morrison admitted stabbing Mr Drummond, from Cleland, Wishaw, but alleged that he had not had a knife with him.
He claimed that Mr Drummond pulled a knife on him, and he managed to grab it from him and stabbed him in self-defence.
The jury did not believe Morrison's story, however, and unanimously found him guilty of murder.
Judge Lord Bracadale told Morrison: "The jury have found you guilty of murder. You repeatedly stabbed Mr Drummond in a vicious and sustained attack and his family has been left bereft by his death."
Advocate depute Alastair Carmichael, prosecuting, had earlier told the court that Morrison has two previous convictions for carrying a knife.
Lord Bracadale added: "Although you have not previously served a custodial sentence you do have a number of disturbing previous convictions."