One of the three terrorists who carried out a car and knife rampage in London Bridge on Saturday night is reported to have been born in Watford.       

Police stated today that they know the identities of all three attackers who killed seven people and injured 48 others on London Bridge and in Borough Market.    

READ MORE: Increased police presence in Hertfordshire following London Bridge terror attack

Watford Observer:

The 27-year-old, known to his friends as “Abz”, featured in a Channel 4 documentary about British jihadists last year, according to the Daily Mail.

At one point he was recorded arguing with police officers after unfurling an IS flag in Regent’s Park.

The Met Police said the names of the attackers would be released “as soon as operationally possible” but asked the media not to identify them yet as investigations into their wider terrorist network continue.

Officers raided two properties in east London on Monday morning and detained a number of suspects.

It follows a raid in Barking on Sunday in which 12 people were arrested.

Note: The Metropolitan Police has since reported that Khuram Shazad Butt, one of the killers named on June 5, was  born in Pakistan.