A young woman is recovering in hospital after she was glassed in the face at a Halloween party in Letterkenny.
The incident happened on the Ard Ri housing estate during the early hours of this morning.
Gardai are carrying out a full investigation into the incident.
The young woman was rushed to the Emergency department at Letterkenny General Hospital where she remains for treatment.
It is understood Gardai are following a definite line of enquiry into the incident in the Glencar area.
It is understood that a number of people who were at the house party were interviewed.
It is not known if anybody has yet been arrested in relation to the vicious attack.