Gardai are continuing their investigations following an incident between two males in Clonmany in the early hours of this morning.
One male sustained a fall and head injury.
The man was unconscious at the scene and was taken to Letterkenny General Hospital for treatment.
He was in intensive care but his injuries are now being described as non-life threatening.
Gardai preserved the scene and a forensic examination was carried out to determine details surrounding the incident.
They have also called upon anyone who may have witnessed anything to come forward.
No complaint has been filed as of yet in relation to the matter.