A MAN who killed a stranger in an unprovoked street attack has been jailed for life.

A judge has ordered Luke Quinn to serve a minimum 14 years behind bars.

The 33-year-old had earlier been convicted of murdering Simon Richardson in Glasgow city centre in November last year.

Quinn had previously been deported to the UK from New Zealand after committing a sex offence.

The 45-year-old victim had been on a night out with friends when he was later set upon by burly Quinn. The killer later boasted in a text to his taekwondo instructor of what he had done.

Sentencing, Judge Bill Dunlop yesterday told Quinn: "No value can be put on the life that was lost and that you took."

Quinn showed no emotion as he was led to the cells.

A jury heard how the victim, of Paisley, had been on a night out after earlier watching his football team, St Mirren.

Mr Richardson died from internal bleeding caused by a blow to the abdomen.

In a further tragedy for the family, Mr Richardson's mother died just six weeks later on Christmas Day.

Quinn denied murder and claimed that he was suffering from diminished responsibility due to Aspergers Syndrome.

Donald Findlay, defending, said: "Luke Quinn is different, he just is. He perceives the world in the way an ordinary individual would not."