The collision occurred yesterday evening.
An elderly man is in a serious condition following a road collision in Offaly.
The incident - involving a van and bicycle occured on the Shinrone to Roscrea road, at the turn-off for Cistercian College at about 6.20 yesterday evening.
A man in his early 70s was taken to University Hospital Limerick with serious injuries.
The road remains closed, with local diversions in place.
Forensic collision investigators are at the scene.