A lorry driver has been held on suspicion of people smuggling after eight people were found in the back of his trailer. An emergency call by one of the migrants due to a lack of oxygen sparked the rescue. A group of migrants trapped inside a truck with little air to breathe have been freed at an autobahn rest area in western Germany, local police said Saturday. The drama unfolded a day earlier as the migrants were piled on top of the truck’s cargo with only 30 centimeters of breathing room. As the oxygen inside the trailer ran out, one of the migrants called emergency services on his mobile phone. Police tracked the location of the truck to a refueling stop near the town of Heiligenroth in the state of Rhineland-Palatinate. Several members of the public also called police to report a group of people jumping out of a lorry. Police arrived at the scene to find 8 migrants including one minor, who said they were from Eritrea. The driver of the truck was arrested and questioned on suspicion of people smuggling. Police said he told them that the vehicle was loaded in his absence in the Netherlands and he had later locked the doors for security reasons. He opened the doors and several people jumped out. Officers emptied the truck of more than 200 kilos of tobacco cartons because they suspected that more migrants were inside. Police said the Eritrean nationals told them they wanted to go to England but had got into the wrong truck. The migrants have been charged with illegal entry to Germany. The unaccompanied minor has been placed in the care of social services.