reports she was a comment who "married a Muslim", but conflicting reports make it unclear if she practices Islam.
Officers have raided a series of properties across East London with several people seen led away in handcuffs for questioning as the Met bids to stamp out any residual terror threat.
Gunshots, stun grenades and controlled explosions have been reported by witnesses at some of the properties cops have stormed in Newham and Barking and Dagenham.
Officers made the 12 confirmed arrests in Barking on Sunday after raiding two properties.
All of those people have now been released without charge, Scotland Yard confirm today.
Seven women were among those arrested on suspicion of terror offences, most at a social housing block of flats believed to belong to be home to ringleader of the killer gang “Abz” in Barking.
Controlled explosions were carried out by officers entering the property in King’s Road.
Officer with Taser pins two suspects to ground as colleague restrains two men and woman Credit: News Group Newspapers Ltd A man is led away by police in Caledon Road, east London, as police carried out raids Less than half a mile from Abz’s apartment, cops arrested a mother as she cradled her baby daughter.
Officers blew down her door at the Barking and Dagenham Foyer — a centre housing those at risk of homelessness — at 7am and took the 38-year-old woman away.
Abz’s sister was held following another operation in nearby East Ham.
Cops confirmed shortly before 6am on Monday that officers had conducted more raids in Barking and Newham with a number of people detained but no arrests made.
Searches of the properties are continuing today.
A Met spokesperson said: "At around 04:15hrs on Monday, 5 June, officers from the Met’s Counter Terrorism Command investigating the London Bridge terror attack entered two further addresses - one in Newham and another in Barking.
"A number of people have been detained and are at present being spoken to."
This woman was seen being led away in handcuffs in Barking Credit: News Group Newspapers Ltd Cops have reportedly arrested 12 people in a dramatic raid in Barking Credit: @DNV_official/Twitter One of the suspects pulled his hood down over his face as he was led into a police van Credit: News Group Newspapers Ltd A large area of an East Ham street was cordoned off on Sunday afternoon
A person has been detained after a series of arrests across east London
Neighbours reported hearing stun guns detonate in Dagenham this morning as heavily-armed cops detained several people at another address .
“Multiple shots” were heard, with witnesses claiming to see police running down the A13 in the East London borough just after 4.30am.
Dramatic pictures show heavily-armed cops getting out of an unmarked navy blue van at the side of the busy road.
Witness and taxi driver Naveed Saleemi said: "We saw the flashes from grenades.
“I saw banging carrying on in the yellow house and they remained there for less than 10 minutes.
“Then we saw or five or six males arrested being brought out in their shorts and T-shirts and they were handcuffed by police."
A sniffer dog is brought to a house in East Ham raided by cops Credit: SWNS:South West News Service Forensic teams leave a raided property in East Ham Credit: Reuters Forensic teams in a property raided in Barking and Dagenham Credit: Getty Images The terror trio killed seven and left 48 injured - 21 critically - after mowing down revellers on London Bridge before going on a rampage wearing fake bomb vests and wielding hunting knives.
As armed cops fired on them a member of the public was caught in the crossfire , with police confirming the person did not suffer critical injuries.
Terror group ISIS claimed responsibility for the mass killing more than 24 hours after the atrocity through their affiliated news agency Amaq.
Despite the warped death cult's claims, Amaq recently claimed that an arson assault on a casino in Manila was ISIS-related. But CCTV footage released shortly after suggested the incident was a botched robbery and not terror related.
The ringleader of the attack has been revealed as an ex-London Tube, KFC and Topshop worker, known as Abz, 27 .
He was pictured lying dead wearing an Arsenal strip after cops gunned him and his two sick accomplices down following the depraved assault on Saturday night.
WHAT WE KNOW SO FAR:
Explaining the challenge of combating the terror threat in Britain Commissioner of the Metropolitan Police Cressida Dick said tens of thousands of people are "subjects of interests".
She added: "What we are seeing generally is firstly some quite low-tech attacks against targets which are easily accessed and we are also seeing people who seem to be highly volatile going perhaps from behaving quite normally to making a plan and carrying out an attack in a very short space of time."
Ms Dick said cops needed to "step up a gear" and look at what the Met can do to combat "a changing threat".
The PM has delivered a firm warning to those who harbour extremists in what looked like a turning point in terror policy today after the latest terror attack struck in the heart of London.
Following the third terrorist attack in three months Theresa May defiantly confirmed Thursday's General Election will go ahead and issued a warning to jihadis and those who harbour them as she said "things need to change".
Police officers escort a person detained in East London on Monday morning Credit: Reuters The detained individual sits inside a police vehicle after one of several raids conducted this morning Credit: Reuters Cops outside a property raided in Dagenham this morning Credit: London News Pictures Heavily-armed cops were spotted getting out of an unmarked van near the A13 in Dagenham Police activity on Caledon Road in east London, where officers have conducted raids after Saturday's deadly terror attack Credit: PA:Press Association A number of people have been arrested and 'detained' since Saturday's attack Credit: PA:Press Association Firearms officers had killed the jihadis within eight minutes of the first call Credit: London News Pictures Medical kits are seen scattered outside a cafe around ten minutes walk west of Borough Market Credit: Getty Images After chairing a Cobra meeting she said: "It is time to say enough is enough. Everybody needs to go about their lives as they normally would. Our society should continue to function in accordance with our values.
"But when it comes to taking on extremism and terrorism, things need to change.
“While we have made significant progress in recent years there is, to be frank, far too much tolerance of extremism in our country.
“So we need to become far more robust in identifying it and stamping it out - across the public sector and across society.
“That will require some difficult and often embarrassing conversations, but the whole of our country needs to come together to take on this extremism."
Did you see the London Bridge terror attack, or know anyone involved? Please contact The Sun newsdesk on 020 7782 4100, text 07423720250 or email exclusive@the-sun.co.uk