A collision between a coach and two minibuses earlier resulted in four Year 8 students being admitted to hospital, North Wales Police say.
The students, who are said to be from outside the area, suffered 'minor' injuries.
The accident happened on the eastbound carriageway of the A55 at Old Colwyn close to Rainbow Bridge, at around 12.45pm.
The driver of the coach has been arrested on suspicion of careless driving and is being questioned at a local police station.
Well it's not too bad out there at the moment! Some brighter spells - and perhaps not feeling quite as bitter as it has done of late
Western areas again in line for a damp and drizzly day - the best of the sunshine further inland.
After a relatively mild start to the night, temperatures are tumbling as skies clear. Frost and fog likely inland