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They were discovered inside a lorry at a council depot in Northampton. The aluminium and nylon tree - and two other smaller ones - were destined for the town centre's Christmas display. But staff at the depot opened the vehicle to discover the men, and immediately dialled 999. A spokesman for Northamptonshire Police confirmed that four men - two from Iraq, two from Iran - were arrested and are being questioned by officers from the UK Border Agency.
A spokesman for the agency told the Northampton Chronicle: 'Following their arrest after being found in a lorry, four suspected illegal immigrants were apprehended and transferred to our specialist teams of officers.'