A man (30s) has been charged in relation to an alleged assault on two off-duty gardaí on Dame Street, Dublin 2, on Saturday.
He is expected to appear before Dublin District Court this morning.
A second man (30s), arrested in connection with the incident, continues to be held at a Garda station in the Dublin region under Section 4 of the Criminal Justice Act, 1984.
Investigations are ongoing, gardaí said.
One of the gardaí allegedly assaulted remains in hospital where he is in a serious condition having sustained a fractured skull and bleed to his brain.
It is understood the two off-duty gardaí were socialising at a Christmas party in the city centre on Friday night into Saturday morning. The alleged assault occurred at the junction of Dame Street and Eustace Street, Dublin 2, at about 1.30am.
- Sign up for push alerts and have the best news, analysis and comment delivered directly to your phone
- Join The Irish Times on WhatsApp and stay up to date
- Listen to our Inside Politics podcast for the best political chat and analysis