Seventeen Vietnamese males were among 18 migrants found hiding in the back of a lorry on a motorway in London on Saturday, local media have reported.
The migrants were found by police on the M1 motorway north of London, the Express reported on Saturday, adding that the truck’s Polish driver was arrested.
Police were called shortly before 4pm yesterday following reports of suspicious activity on a truck travelling in Hertfordshire.
The police managed to track down the vehicle and stopped it west of Northampton.
The 18 people thought to have stowed away on the lorry were taken into custody for their own safety, police said.
Police also arrested the truck driver, a Polish man.
The Home Office confirmed on Sunday afternoon that 17 of those detained were Vietnamese males and 15 of those claimed to be minors.
Officials said they would now be conducting age testing to determine if they were in fact under the age of 18.
The identity of the 18th migrant was not revealed.
Hertfordshire Police said a 40-year-old man from Poland was arrested on suspicion of assisting people entering the UK unlawfully.
Lorry drivers can be fined up to £2,000 for every migrant that is found in their vehicle - meaning the Polish driver could be landed with a £36,000 bill.