Gardaí in Dublin are trying to establish a motive for the murder of a father-of-three who was shot dead in a pub in Finglas early this morning.

Alan McNallly, 36, from Cappagh Road was shot several times in the head by a gunman in the Cappagh Nua pub at around 1am.

He was pronounced dead a short time later at Connolly Hospital in Blanchardstown.

Gardaí believe a second man was also involved in the attack. It is understood he may have waited outside.

The murder weapon has not been recovered.

The gunman is described as being 6' tall and of stocky build. He was wearing a navy jacket with a red collar, black tracksuit bottoms and white runners.

The second man is described as 5'10" and of slim build. He was wearing white/grey tracksuit bottoms, a black hooded top, white runners and gloves.

Gardaí said he had a "Scream-type" mask covering his face.

Witnesses reported that the gunman went in the direction of the Casement area after the shooting.

Anyone with information is asked to contact Finglas Garda Station on 01-6667500, the Garda Confidential Telephone Line 1800-666111 or any garda station.