Road re-opens after Portumna crash
Gardaí, ambulance and two units of Portumna fire services rushed to the scene, and one of the men was taken to Portiuncula hospital in Ballinasloe.
He is being treated for head injuries, which have been described by Gardaí as serious.
The other three men were uninjured.
Anyone with information is asked to contact Portumna Garda station on 09-097-42060
