A police officer has been seriously injured and a colleague needed hospital treatment after they were attacked while responding to an incident in east London.
The officers were confronted on the balcony of an address in the De Beauvoir Estate in Hackney following reports of a man attempting to force entry into a property.
The caller said he may have been suffering a mental health crisis.
The man fled and police are urgently trying to trace him.
Detective Chief Superintendent James Conway, Basic Command Unit (BCU) commander for Central East Area, said: “This incident is once again, an example of the very real dangers our officers can be confronted with, at any time, as they ultimately work to protect and serve our communities.
“It is entirely unacceptable that officers who are doing their job and conducting reasonable and legitimate enquiries should be assaulted in this disgraceful way.
“We will ensure that both officers involved in this incident, who showed great bravery and professionalism, will receive the continuing support they need and deserve.
“Meanwhile, our detectives are leading the investigation to find the person responsible.”
Anyone with information about the incident is asked to call police on 101 quoting reference 449/10Mar.