One of the two Northern Irish men charged with manslaughter over the deaths of 39 Vietnamese people found in the back of a truck near London last month challenged attempts to extradite him to Britain in an Irish court on Thursday. Britain began extradition proceedings on Nov. 1, a week after the discovery of the bodies in an industrial estate. Eamonn Harrison, 22, was charged with human trafficking and immigration offences, as well as 39 offences of manslaughter.