An Irishwoman who converted to Islam and became radicalised in Britain claims there are 150 extremists operating in Ireland.

Gardaí still have a “lot of inquiries” to conduct in their investigation into Rachid Redouane, but believe they are mainly dealing with an “immigration investigation”.

The Imam of a Limerick mosque has said he would, as a last resort, be prepared to physically tackle any terrorist using his religion to murder innocent people, if an attack were imminent.

His colleague said: "I was trying to help him and he pointed his baton towards the attacker and said 'get him'. Even when injured, he was trying to fight."

Gardaí were able to establish within two hours of the London terror attacks links to Ireland and identify one of the three suspected attackers, the garda commissioner has said.

A larger anti-terrorism unit, more armed gardaí on the streets, round-the-clock regional support units and specially trained garda dispatchers for terrorist and firearms incidents are all being put in place to deal with potential terror threats.

Gardaí have not changed the threat level here following a further assessment, with sources saying that “nothing” has emerged to increase the risk.

A man arrested in Limerick in connection with the London attacks was working as a chef using a PPS number issued in the name of murdered terrorist Rachid Redouane.

Concerns that Islamic terrorists would use Ireland as a “stepping stone” to enter Britain have existed for many years, former justice minister Dermot Ahern has said.

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These are the faces of two of the three terrorists who carried out the London Bridge attacks — one of whom had lived in Ireland.

The London attack terrorist who is believed to have been living in Ireland as recently as last year was not being monitored by gardaí, outgoing Taoiseach Enda Kenny has confirmed.

The London Bridge attacker believed to have spent time in Ireland was not known to Muslim leaders here.

IRELAND has, for decades, been one of the back doors into Europe for drug smugglers and, latterly, people traffickers.

Police raided two addresses in east London on Sunday, in the wake of the van and knife rampage in which seven people were killed and 48 injured.

A probe is underway into the background of London Bridge attacker Rachid Redouane and his connection with Ireland after the discovery of documentation which suggested he spent time here in Ireland.