A group of nine people, including teenagers and children, have been arrested in Spalding on suspicion of entering the UK illegally.
The arrests were made after a police search of the town centre and railway station when they received reports of a group running from the back of a lorry parked in Clay Lake at about 12.50pm on Friday.
Of the nine people arrested, originally from Albania and Iran, most were teenagers aged between 15 and 17-years-old.
But police also arrested a family of four, including two children, who were hiding in the lorry which came from Spain.
Insp Jim Tyner, community policing inspector for South Holland, said: “We are satisfied that everyone who was seen to have run from the lorry were arrested and they have all been handed over to the care of Home Office Immigration Enforcement officials.”