Former Taoiseach Bertie Ahern was assaulted last night in a pub in Dublin city centre.
Mr Ahern was hit on the head with a crutch wielded by a man in his 40s.
The former Taoiseach was not seriously injured in the attack.
The incident happened in the Sean O'Casey pub, a well-known establishment, just off O'Connell Street.
The man is understood to have been “extremely drunk”.
He was kicked out of the pub and subsequently arrested after he verbally abused a garda who arrived at the scene.
It is understood the arrest was not related to the assault on the former Taoiseach and is believed to have been for a minor public order offence.
The man was taken into custody and held in Store Street Garda Station.
Gardai declined to comment on the incident.
Since departing from office, sources say Mr Ahern has occasionally been verbally abused by members of the public.
The former Taoiseach is still a regular in Fagan's, the local pub in Drumcondra, near to his home and across the road from his former constituency office of St Luke's.
Mr Ahern no longer has a garda driver. The privilege was removed from former Taoisigh two years ago after the current Government came to office.
It was widely reported three years ago that Mr Ahern was verbally attacked by an angry widower in another of his locals, the Goose Tavern Pub.
On that occasion he was approached by the man who lashed out at him over the standard of care that his dying wife received in the health system. A friend of Ahern's moved to restrain the man before a barman intervened.
By Nicola Anderson