Dozens of Muslim women have gathered on Westminster Bridge in London to express solidarity with the victims of Wednesday’s deadly attack outside the British Parliament.

The women stood in silence with heads bowed for five minutes on Sunday remembering the victims who lost their lives in the assault, which was claimed by the Daesh terrorist group.

At least four people were killed and 50 others were injured in the attack on Wednesday after British-born Khalid Masood plowed a car into pedestrians and fatally stabbed police officer Keith Palmer, an incident that has been declared a terrorist incident. The attacker was later killed by police.

The event was organized by Women’s March on London at the scene of the terror attack near the Parliament.   

People from a range of backgrounds joined the Muslim women, lined up along the bridge, linking hands and bowing their heads.

Attendee Kerena Sheath told The Guardian newspaper the vigil was an act of remembrance.

"That man wanted to divide us, so by joining hands we are literally doing the opposite of what he wanted," she said. "This is London and you are not going to change us."

Meanwhile, the British police have arrested the 12th suspect, who is a 30-year-old man, as part of investigations into the attack. Nine of the suspects were released without further action.

The Saudi Embassy in the United Kingdom on Friday confirmed Masood had visited the kingdom three times.

Earlier, The Sun newspaper reported that the London attack suspect was a former English teacher working at the institution controlling Saudi Arabia’s civil aviation.

Saudi Arabia, where Wahhabism is widely preached and practiced, stands accused of sponsoring terrorist groups such as Daesh.

A statement published by the Amaq News Agency, which is seen as the terror group's official press service, has said the assailant was a "soldier” of Daesh.