The public prosecution service has decided not to charge a senior Sinn Féin member and former IRA prisoner with the alleged importation of weapons from the United States.
The businessman told Spotlight he had posted about 200 weapons to NI.
This was between 1995 and 1999.
In response, the PSNI said the allegations of IRA gun-running from Florida were the subject of investigation.
Sean Murray has always denied the allegations.
In a statement issued on Monday afternoon, a spokesperson for the PPS (Public Prosecution Service) said: "I can confirm that a decision has been taken not to prosecute a man for any offences in relation to the alleged importation of firearms.
"Careful consideration has been given to all of the available evidence and it has been concluded that this is insufficient to meet the Test for Prosecution."