Garda terrorism officers are examining digital devices of a man arrested as part of a British jihadi investigation to establish who he has been in contact with.

A man arrested in connection with the forging of documents has been released from Garda custody.

Garda security services are consulting with London police on an Islamist terrorism investigation after the arrest of an Algerian man in Dublin in relation to fraudulent identification documents.

The Garda’s security service is examining whether any “pre-planning” for the London attacks occurred in Ireland following claims from a former Muslim radical that a second of the three terrorists had stayed here.

Garda counter-terrorism officers are to consult with foreign security agencies following the arrest of two men on suspicion of funding so-called Islamic State (IS), writes Cormac O’Keeffe of the Irish Examiner.

An Irish imam said he is concerned about those in the community who are providing “moral support” to extremism and terrorism.

Gardaí are expanding the size and expertise of its secretive unit tasked with combating Islamic extremists. The garda’s security chief told the Irish Examiner that the investment would enhance the strength and investigative skills of Counter Terrorism International.