One of the London Bridge terrorists was carrying an identity card issued in Ireland when he was shot dead, security sources in Dublin said.

The revelation comes after reports one of the three men had also appeared in a Channel 4 documentary about jihadis in the UK.

The 27-year-old, said to be from Barking in east London, was pictured lying on the ground after police arrived on Saturday night and shot the attackers dead.

Seven people were killed and 49 injured when the trio drove a van into pedestrians on London Bridge before stabbing people in bars in nearby Borough Market.

Irish broadcaster RTE reported authorities found an Irish identity card on the body of one of the suspects, indicating he had previously lived in Ireland.

Police chiefs in Dublin said they were working with counterparts in the UK.

“An Garda Siochana is providing every assistance to our colleagues in the London Metropolitan Police in relation to the terror attack in London,” a spokesman said.

“We will process all requests from the UK authorities in relation to inquiries into individuals, identities or any other matter.”

There are unconfirmed reports the man who had been carrying the Irish-issued ID may have claimed to be from Morocco, and that he was married to a woman from Scotland and had lived in Dublin.

Gardai are investigating whether the ID card belonged to the dead man and if the documents are legitimate.

London Bridge Terror Attack Show all 16 1 /16 London Bridge Terror Attack London Bridge Terror Attack Armed police on Borough High Street as police are dealing with a "major incident" at London Bridge PA London Bridge Terror Attack Armed Police talk to members of the public outside London Bridge Hospital as police are dealing with a "major incident" at London Bridge PA London Bridge Terror Attack Police Officers outside the Barrowboy and Banker Public House on Borough High Street as police are dealing with a "major incident" at London Bridge PA London Bridge Terror Attack Armed Police talk to members of the public outside London Bridge Hospital as police are dealing with a "major incident" at London Bridge PA London Bridge Terror Attack Armed police on Borough High Street as police deal with a 'major incident' at London Bridge PA London Bridge Terror Attack Emergency services near the scene of the incident Screengrab London Bridge Terror Attack People run down Borough High Street as police are dealing with a "major incident" at London Bridge Reuters London Bridge Terror Attack Emergency services arrive at the scene near Borough market at London Bridge Carl Court/Getty Images London Bridge Terror Attack Emergency personnel on London Bridge as police are dealing with a "major incident" at London Bridge PA London Bridge Terror Attack Police sniffer dogs on London Bridge as police are dealing with a "major incident" at London Bridge PA London Bridge Terror Attack A second helicopter lands on London Bridge as police are responding to three incidents in the capital, amid reports that a vehicle collided with pedestrians on London Bridge, Scotland Yard said. Officers are dealing with reports of stabbings in Borough Market, where armed officers attended and shots were fired. They are also at an incident in the Vauxhall area PA London Bridge Terror Attack Police attend to an incident on London Bridge in London REUTERS London Bridge Terror Attack Police attend to an incident on London Bridge in London, Britain Reuters London Bridge Terror Attack A police officer escorts members of the public to safety at London Bridge Getty Images London Bridge Terror Attack Police attend to an incident on London Bridge in London, Britain Reuters London Bridge Terror Attack Police attend to an incident near London Bridge in London, Britain Reuters

It is understood inquiries are continuing into whether the man was given an Irish ID card issued by the Garda National Immigration Bureau.

The plastic credit card-sized documentation is given to people from outside the EU. It has a person's certificate of registration which states they have permission to stay in Ireland and must be carried at all times.

There are also inquiries into whether the man had been given paperwork after landing in Ireland to claim asylum or if he had an ID card issued under EU treaties which allowed him to live in Ireland with his family.

Garda Commissioner Noirin O'Sullivan was holding a meeting with the force's anti-terror and intelligence chiefs as they co-operate with the Met investigation.