A fourth man has been arrested in connection with the fatal shooting of a father of one in Co Limerick at the weekend.

Andrew O'Donoghue (51) was targeted outside a motorbike club in Murroe village on Saturday afternoon.

He was still alive when he was rushed to University Hospital Limerick - but was pronounced dead a short time later.

Mr O'Donoghue was shot in the head as he closed a gate to the clubhouse.

Three men - two aged in their late 40s and one in his 20s - were arrested on Saturday night.

And a fourth man, aged in his late 40s, was detained in Limerick city this morning.

He is being held at Henry Street garda station.

David Raleigh is a reporter based in Limerick - he told Newstalk Breakfast earlier this may be related to an assault two weeks ago.