The senior officer investigating organised crime in Ireland has said gardaí will not cease until the Kinahan organised crime group has been dismantled.

Assistant Commissioner John O'Driscoll said the criminal organisation had "wreaked havoc" on communities worst affected by poverty, disadvantage and drug addiction.

His comments come as three Kinahan gang members were jailed today for their roles in a plot to kill the brother of the leader of the rival Hutch organised crime gang in Dublin over two years ago.

The Assistant Commissioner would not comment on individual cases but said gardaí stood by evidence given to the High Court which identified Daniel Kinahan as a senior figure in organised crime.

He also said it was not in the public interest for the gardaí to forewarn any individual or criminal organisation, they were in particular targeting those at the top of organised crime.

He said investigating officers had been to the Middle East, where Daniel Kinahan was based and international co-operation has already resulted in significant criminal figures being caught and convicted at home and abroad.

"Our aim," he said, "is to dismantle the Kinahan organised crime group as well as other criminal organisations. We would say to all of those involved in organised crime that it is not too late to repair the damage to their own communities."

In relation to the Kinahan organised crime group's associations with the sport of boxing, the Assistant Commissioner said that "boxing was a very important sport and many of those involved have represented their country with distinction".

Earlier this month, a Bahrain sports company ended its involvement with Daniel Kinahan. KHK, the company set up by the King of Bahrain's son, said in a statement that it had "discontinued its engagement with Daniel Kinahan and he is no longer an adviser" to the company.