All passengers 'accounted for' after RAF helicopter incident
Walkers reported sightings of black smoke billowing from a peak in Snowdonia.
Emergency services are attending an incident scene involving what is believed to be an RAF helicopter in an area of Snowdonia.
Rescue teams were dispatched to the Yr Aran area of Snowdonia National Park, North Wales Police said.
Walkers in the mountainous area reported sightings of black smoke billowing from a peak.