A PART of a road in Gwynedd has been blocked this afternoon following a crash involving two vehicles.

North Wales Police and the Welsh Ambulance Service have been dealing with a road traffic collision on the A487 roundabout between Dinas & Llanwnda on the outskirts of Caernarfon.

One lane has been blocked, causing long tailbacks and build-up of traffic in the area. Drivers are being advised to avoid the area and use an alternative route.

More to follow.