A lorry driver has been arrested on suspicion of people trafficking after 13 men were discovered in the back of his vehicle.
Three of the men were taken to hospital suffering heat exhaustion, West Midlands ambulance service said.
Paramedics, an air ambulance and police officers were called after 2pm on Thursday to Mangrove Service Station, on the A45 London Road, in Rugby, Warwickshire, and discovered the men inside the lorry.
A spokesman for Warwickshire police said officers had found the men after they were called to Mangrove service station in Rugby at 2pm on Thursday.
Ten of the men were taken into custody, police said, and the driver was arrested on suspicion of people trafficking.
The origin of the lorry, or the men inside, was not known but police confirmed it had travelled from overseas. The Border Agency has been informed, police said.
A West Midlands ambulance service spokesman said: “Crews arrived to discover 13 patients who had been travelling on the back of a lorry.
“All of the patients were male, with three of them receiving treatment at the scene for signs of heat exhaustion before they were transferred to University Hospital Coventry and Warwickshire on land ambulances.
“None of the injuries are thought to be serious.”
The A45, a major road running east from Birmingham past the National Exhibition Centre and the M42, was closed westbound between the M45 and the A4071.
