Police have confirmed two knives were found at the scene on Essex Road as the area was placed on lockdown.

One witness described it as "absolute chaos" while another said the crash "looked deliberate" with Saturday night revellers terrified it was a terror attack.

The pedestrians were mowed down near the Old Queen’s Head pub just before 11pm on Saturday.

A Metropolitan Police spokesman said four males, aged between 17 and 19, have been arrested in connection with the incident.

Three people – two males and one female – have been taken to hospital for treatment.

(Image: TWITTER) (Image: TWITTER) (Image: TWITTER)

London has been on high alert after a car ploughed through pedestrians on Westminster Bridge before ramming into the gates at the House of Parliament on Wednesday.

Police to do not beleve this latest incident is terror-related.

James Monks told the Daily Star Online: "We didn't see the incident but headed towards to see if we could help.

"Police had the road blocked off, spoke to a friendly female officer who said the victims were seriously injured but conscious."

(Image: TWITTER)

Another witness described how people went down "like dominoes" when the car smashed into them.

She told MailOnline: "There were about twenty people in the queue and I was at the back with my friends.

"The car came screeching round the corner at about 50mph and was coming straight for me.

"I pushed over the barriers and fell to the floor as the car smashed into three people in front of me. They were knocked over like dominoes.

"Everyone was screaming as the driver then drove off. It definitely looked deliberate and we all thought it was a terror attack.

"The bouncers then let everyone into the pub to keep us safe and police arrived almost immediately.

"The sight of the car was terrifying. I'm still in complete shock."

(Image: TWITTER)

An initial statement by the Metropolitan police said they had arrested one male – believed to be the driver – in connection with the incident.

A police spokesman later said: "Four males, aged between 17 and 19, have since been arrested on suspicion of a variety of offences including GBH [grievious bodily harm] with intent and possession of points and blades. All four remain in custody.

"Two knives were recovered at the scene – one inside the car and one found near to the car.

"Enquiries into the circumstances continue.

"This is not being treated as terrorist related."

Last week terror struck the heart of London after Khalid Masood drove a 4x4 through crowds in Westminster, killing four people and injuring more than 40.

The horrific incident was later claimed by ISIS who said Masood was "one of their soldiers".

Tributes have been paid in the last few days to hero cop PC Keith Palmer, who was knifed numerous times by the evil lone wolf attacker.