A tennis coach and a university student who left a man in a coma after attacking him on Dublin's Grafton Street are to serve three months in prison.

Stephen Nugent, 24, from Swords and 29-year-old Dermot Cooper from Stillorgan, both in Dublin, pleaded guilty to assault causing harm to Sligo librarian Barry Duggan in April 2003.

Judge Donagh McDonagh said the defendants had run off 'triumphant' after the assault on a 'puny man'.

However, Judge McDonagh accepted that they had no previous convictions and were unlikely to come to the attention of gardaí in the future.

He therefore imposed three-year sentences with all but the last three months suspended.