"Counterterrorism officers are carrying out searches at three addresses in the Midlands as part of their ongoing investigation into a collision in Westminster this morning," the press release read.
READ MORE: UK PM Calls Second Terror Attack on Westminster 'Shocking'
A Ford Fiesta collided with several cyclists and pedestrians earlier on Tuesday before crashing at high speed into a security fence outside the Houses of Parliament. Three people were injured in the incident, police said.
14 August 2018, 06:50 GMT
The driver of the car was arrested at the scene on suspicion of terrorist offenses. According to the press release, a 29-year-old man is a UK national. His vehicle remains at the scene.
UK Prime Minister Theresa May expressed her support for those injured and thanked the emergency services "for their immediate and courageous response."