Gardaí in Athlone say a man who helped a young woman in the town last Friday night might not realise the importance of his role.
A Garda investigation is underway into what's been described as a serious assault on a young woman near Athlone Castle shortly after midnight last Friday.
A man has been arrested in connection with the assault and is currently detained at Athlone Station.
Garda Sergeant Andrew Haran says they are very anxious to talk to a man who came on the scene and who helped the young woman involved.
Sergeant Haran says the man might not realise how important his help was in the situation.