A ramming at Parliament Square in London has been determined by police to be a terror attack.
Police have arrested the driver, who is being held on terror charges. Police noted that the suspect was not previously known to them, and has not yet been properly identified.
Dozens of emergency vehicles were on the scene after a car crashed a parliament barrier, Reuters reported. The driver crashed while driving at high speed towards the barriers.
According to the Metro, he did not have a front license plate when he crashed, injuring a number of people, including several cyclists.
London's Metropolitan Police tweeted, "At this stage, officers do not believe that anybody is in a life-threatening condition. Cordons are in place to assist the investigation. Westminster tube station is closed."
In a separate tweet, Metropolitan Police wrote, "While we are keeping an open mind, the Met's Counter-Terrorism Command is leading the investigation into the #Westminster incident."
"We have treated two people at the scene for injuries that are not believed to be serious and have taken them to hospital," London Ambulance tweeted.