Police officer is hurt as football fans clash.
A clash between rival football fans ahead of a Welsh derby saw a police officer taken to hospital.
Rival supporters managed to break through a police cordon when the "disturbance" unfolded.
The shocking scenes came before Caernarfon Town's 2-1 win over Bangor City in the Welsh Cup fourth round at Nantmorth.
Bangor were hosting bitter rivals Caernarfon in the showpiece game of the round, with the tie being chosen for TV coverage.
Traffic was brought to a standstill during the incident and the road cordoned off while police tackled the opposing fans, North Wales Live reports , just before 7pm on Saturday.
They report that flares were let off and police officers were kicked and spat at while fans could be heard jeering at their rivals in a stand-off lasting around half an hour.
Superintendent Richie Green, of North Wales Police, said: ""The vast majority of those attending are law abiding football fans and I'm appreciative of their patience whilst the policing operation was in place."
Anyone with information is asked to contact 101, quoting reference number X011746.