Northern Ireland police say they have released without charge six suspected Irish Republican Army dissidents who were arrested after a masked man told a public rally that Real IRA attacks would continue.

Police said Tuesday that all six men were arrested hours after a few hundred Real IRA supporters gathered beside an IRA memorial in a cemetery in Londonderry, Northern Ireland's second-largest city. All six were released without charge Tuesday night.

During Monday's rally, a masked man representing the Real IRA faction told the crowd its members would keep targeting Northern Ireland police and British soldiers, their bases and unspecified "British interests."

The Real IRA rejects the IRA's 2005 decision to disarm and renounce violence.