A suspected illegal immigrant was tracked by a police dog called Max, after it is believed the man jumped out of a lorry.
Five suspected illegal immigrants are believed to have jumped out of a lorry, and were all arrested on Thursday, September, 12, at Watford Gap services.
At about 2pm, officers detained the men, believed to be foreign nationals, on suspicion of immigration offences.
Four of the men were arrested at Watford Gap, while a fifth man was tracked by police dog Max along a canal tow path and located on the A5.
The people will now be dealt with by UK Border Agency.