The A361 has been closed following a serious crash this afternoon (Thursday).
Emergency services were called to a road traffic collision on Marston Road, near Frome, at around 3.30pm.
Wiltshire Air Ambulance landed at the scene as medics treated at least one casualty.
Further details about the incident are unknown, but the road is likely to remain closed into the evening.
It’s shut betwen the Nunney Catch and Marston Road roundabouts.
A spokesperson for Avon and Somerset Police said: “The road is likely to be closed for some time so we’d please advise people seek an alternative route.”