Sixteen people found stowed away in a lorry at Perkins Engines in Peterborough are being questioned by police.
They were found yesterday morning and are thought to be from Eritrea in Africa.
The Home Office says the ten men and six women in the lorry had entered the country illegally.
They were taken to Thorpe Wood police station.
CCTV footage has been released by British Transport Police of two people seen repeatedly crossing rail tracks, narrowly missing trains.
A couple were caught on CCTV walking into a store and moments later leaving with a £299 table.
He took them from a parked van - not realising it was an unmarked police vehicle.