The HSE is investigating after a patient attending University Hospital Limerick fell from a first floor at the hospital last week.
The man is believed to be in a serious condition.
The HSE are not in a position to divulge information regarding his injuries to the media.
The man is said to have walked out of the Emergency Department before making his way to a mezzanine from where he fell to the ground floor.
The hospital has said they are aware of the incident and the incident is "under review".