Fifteen immigrants were rescued from the back of a truck in England after someone called police to report suspicious activity in the area, a report said.

Authorities in the southwestern town of Wiltshire closed in on the truck at about 8:30 p.m. local time and rescued the migrants, the Guardian reported.

Police took a 50-year-old man into custody at the scene. He’s accused of assisting with illegal entry, according to the report.

All of the people rescued from the truck were in stable condition Wednesday night, the report said. One of them was taken to a hospital for evaluation.

“Officers attended the scene and located 15 people in the rear of the vehicle. At this early stage of our investigation, we believe they are all over the age of 16,” a police spokesperson told the newspaper.

The suspected trafficking comes after several people were arrested this week in connection to 39 migrants who died in the back of a refrigerated truck in October.