The Garda Commissioner has said that there is a possibility that members and leaders of the Kinahan organised crime gang could be prosecuted in other European countries or the United States.

Drew Harris said that gardaí had daily engagement with authorities in both jurisdictions in relation to the investigation.

He also said that a lot of intelligence had been gleaned from the recent appeal for information about the gang's activities and they are using that to build a case.

Commissioner Harris said the object of that appeal was to bring gang members to justice "whether we do that here in Ireland or another jurisdiction brings them to justice and brings them before the courts we have to see."

He said the focus was "gathering evidence" to make sure Gardaí "have the best chance of where a prosecution could be successfully mounted".

"We're working very closely with US law enforcement in respect of that," Mr Harris said.

He added that without an extradition treaty it was difficult for Ireland but said that is not the same for other countries.

The strategic view was to bring the gang to justice "where we can", Mr Harris said.