A man held after a auto struck pedestrians outside a London museum on Saturday has been released, while remaining under investigation.
Authorities said they are still working to establish the circumstances and motive surrounding the incident.
Police said the arrested man was among nine people who were taken to hospital to be treated for a range of head or leg injuries.
The Metropolitan Police said the man had been arrested at the scene and initially received hospital treatment.
A witness who walked into the Museum the same street, said: "We were waiting at a traffic light, and at that moment I heard a sharp popping like gunshots, and we saw on the sidewalk jumped out of the vehicle".
A man was detained at the scene on Saturday after a vehicle apparently mounted the pavement outside the popular tourist attraction in the South Kensington area of the United Kingdom capital.
A spokesman later said the incident was not being treated as terrorism-related at this stage.
There were reports of pedestrians running out of the way before what appeared to be a security guard from the museum and some members of the public pinned the driver to the ground before police arrived.
Video footage posted on Twitter showed a man being restrained on the ground in the middle of Exhibition Road in front of what is believed to be a Toyota Prius minicab that had collided with a silver Vauxhall saloon.
A BBC reporter at the scene said she could see a auto diagonally across the road surrounded by a crowd of people with one or two on the ground.
No one is believed to have life-threatening or life-changing injuries, and the majority were discharged by late Saturday.
Anyone with any information is asked to contact the Serious Collision Investigation Unit at Merton Traffic Garage on 020 8543 5157.
The incident took place in one of London's most popular tourist destinations.
Armed police were deployed to the scene and the whole area was cordoned off.
The UK is now under a "severe" level of threat of terror attack, according to the MI5 Security Service's rating system.