The A350 in Chippenham has been closed tonight as the emergency services discover 15 suspect illegal immigrants.
Police were called by a member of the public shortly before 8.30pm this evening, following a report of suspicious activity involving a lorry.
When officers attended the scene, they found 15 people in the rear of the vehicle.
A spokesperson for Wiltshire Police said: “At this early stage of our investigation, we believe they are all over the age of 16.
“Colleagues from the ambulance service and the fire service attended the scene and carried out initial medical checks – fourteen of these people are currently being conveyed to custody, while one person has been taken to hospital for further checks – they are not believed to be in a serious condition.
“A road closure has been put in place on the A350 at the Kington Langley crossroads while the lorry is recovered.
“In addition, one man, aged in his 50’s, has been arrested on suspicion of assisting with illegal entry and taken to Swindon custody for further questioning.”