A schoolboy has tragically died after being hit on the head by a bottle thrown across the playground.

Oisin McGrath, 13, was struck while playing football on his lunch break at St Michael's College in Enniskillen, Co Fermanagh, on Monday afternoon. 

A 17-year-old boy was arrested and later bailed pending further police inquiries into what happened, the Daily Mail reports.

Peter Robinson, First Minister of Northern Ireland, sent a messageof condolence on Twitter and wrote: 'Young Oisin McGrath's death is heartbreaking.

'I'll be praying for his family and all those devastated by this sad news tonight.'

Sources at the school said Oisin was playing football with friends when he was hurt. It is believed a water bottle was thrown across the playground and struck the schoolboy on the head.

Local priest Father Seamus Quinn had been at Oisin's bedside along with his devastated family.

He said: 'They are stunned, numb and utterly shocked, with their hearts broken.

'People were shocked when they heard that there were no signs of life and the support would be gradually removed.'

The teenager played Gaelic Athletic Association (GAA) football in Belcoo. His mother Sharon is secretary in the local club.

Paul McGrath, coach of the Belcoo under-14 side, described Oisin as a 'good, quiet lad'.