Three people are in hospital after a police car collided with another car on a busy road.
Dripping petrol from the wreck meant that the London Fire Brigade was called as a precaution.
Images on social media show the police car with a crushed bonnet and its airbags exposed after it had mounted the pavement by a lampost.
The other car a black Ford had all its doors open.
A Met spokesman said: “Officers are dealing after a collision in Tower Hamlets.
“A police vehicle was in a collision with a car.
“Two officers and a member of the public have been taken to hospital by LAS, their injuries are not thought life-changing or threatening.”
“LFB attended due to vehicles leaking on to the road.”
He warned motorists to expect delays as emergency services deal with the collision.