All those arrested in connection with the Westminster terror attack which left five people dead have now been released with no further action being taken.

Twelve people were arrested from addresses in Birmingham, London and Manchester after Khalid Masood, 52, crashed his Hyundai 4x4 into pedestrians on Westminster Bridge before, armed with knives, he tried to break into the Palace of Westminster.

From March 22: Westminster terror attack: Four people dead after car hits pedestrians on Westminster Bridge, police officer stabbed at Houses of Parliament and attacker shot

From last week: Westminster terror attack 'over within 82 seconds'

Masood was shot dead at the gates of  the Palace of Westminster, bringing an end to 82 seconds of carnage on March 22.

A 30-year-old man arrested on March 26 in Birmingham on suspicion of preparation of terrorist acts and detained under the Terrorism Act was released with no further action being taken yesterday (Saturday, April 1).

Eleven other people who were previously arrested in connection with the Metropolitan Police’s investigation have all been released with no further action.

Masood’s attack claimed the lives of American tourist Kurt Cochran, 54, “coolest of mummies” Aysha Frade, 44, Clapham pensioner Leslie Rhodes, 75, and hero cop PC Keith Palmer, 48.

From this week: PC Keith Palmer died after chest stab wound despite wearing body armour

The inquests into their deaths opened and were adjourned on Wednesday, March 29, under the authority of Senior Coroner for Westminster, Dr Fiona Wilcox. A provisional date for the pre-inquest review was set by the coroner as May 19 at the Royal Courts of Justice.

Dr Wilcox also opened and adjourned the inquest into the death of Khalid Masood on Thursday, 30 March. Masood’s pre-inquest review has also been provisionally scheduled for May 19 at the Royal Courts of Justice.

The Metropolitan Police’s enquiries continue.