The arrest comes as UK investigators continue to question four people about the 39 migrant deaths, an incident which is said to have created the biggest British murder investigation since the July 2005 Jihadist suicide bombings in London, Trend reports citing Sputnik.
A fifth person has been arrested in connection with the death of 39 migrants who died after being locked in a freezing cold container bound for the UK, The Daily Mail reports.
The man, who was reportedly in his twenties, was detained after he got off a ferry on Saturday afternoon. He is thought to be from Northern Ireland.
It was preceded by a blue Scania truck that the man was driving being impounded by the police.