Witnesses described seeing people 'lying in the road' after a car and motorbike crashed at a roundabout in Gwynedd.
The collision happened just before 4pm today on the A4087 Faenol roundabout in Bangor.
The road was closed, and emergency services were quickly on the scene.
One witness told North Wales Live: "I was driving round the roundabout. There were a lot of emergency services vehicles and people lying in the road."
The eyewitness described the collision as a "terrible accident".
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Two people were treated at the scene and then taken by ambulance to Ysbyty Gwynedd.
A Welsh Ambulance Service spokesperson said: "We were called to reports of a road traffic collision on Caernarfon Road, Bangor this afternoon, Friday 14 August, at 3.47pm.
"We responded with two emergency ambulances. Two people were treated at scene and taken by road to Ysbyty Gwynedd, Bangor."