And others have suffered “catastrophic injuries,” so it could continue to rise.

“FOUR people are dead – including police officer and terrorist – and 20 more injured – after killer mowed down pedestrians on Westminster Bridge before killer is shot attacking police in Parliament grounds,” by Richard Spillett, Tim Sculthorpe, Martin Robinson, Alexander Robertson and Mark Duell, MailOnline, March 22, 2017:

Four people are dead after a terrorist brought carnage to central London today, mowing down pedestrians on Westminster Bridge and attacking police with knives in the grounds of the Houses of Parliament.

At least 10 people were hit on the crowded bridge when a 4×4 drove along the pavement, knocking down pedestrians before crashing into a fence below Big Ben.

An intruder, described by a witness as ‘middle-aged and Asian’ and carrying two knives, then managed to break into the grounds of the Parliament and stabbed a police officer before he was shot and injured. The policeman has since died.

It is currently believed one attacker was involved, killing three people, including a policeman, and leaving at least 10 pedestrians and two other police officers seriously injured.

Prime Minister Theresa May was bundled into her car by a plain-clothes police officer and driven quickly from the scene as the attack unfolded. She will chair a meeting of the Government’s emergency Cobra Committee tonight.

Scotland Yard said the attack, which comes a year to the day after the terrorist atrocities in Brussels, is being treated ‘as a terrorist incident until we know otherwise’.

It is currently known:

Four people are dead, including one pedestrian and a policeman protecting Parliament.
Others on the bridge suffered ‘catastrophic injuries’. At least one of the people being treated in the palace courtyard was wheeled away on a stretcher with their face covered….

Witness Jayne Wilkinson said: ‘We were taking photos of Big Ben and we saw all the people running towards us, and then there was an Asian guy in about his 40s carrying a knife about seven or eight inches long.

https://www.jihadwatch.org/2017/03/death-toll-now-four-in-islamic-jihad-attack-at-uk-parliament