But Lukasik's defence counsel Lorraine Smith today told the High Court in Auckland her client sent money from New Zealand probably to help out his troubled father.
The court heard Lukasik told Customs officers he lived in Belfast, adding: "There's some bad Irish people there."
Smith said there was no proof Lukasik was being reckless when he sent money overseas through Western Union on December 6, 2016.
She said Lukasik sent the money "to save his father from both bad people and the prospect of being locked up".
"It is ludicrous to suggest that a carrier would bring on board 4kg on a boat and hope that they may be able to conceal it during any inspection that might occur."
Smith said it was wrong to suggest security at New Zealand borders was sloppy.
"In fact, it is very strict, as you'd expect."
All defence lawyers have now finished their closing remarks to jurors.
Justice Tracey Walker will then sum up the case to jurors.