“I have visited and spoken to our officer’s partner together with other colleagues. We are giving her the best support we can.
“My heartfelt condolences go to her, their family, colleagues and wide circle of friends. I am thinking of everyone who has been involved and affected by this terrible event.
“We are all deeply shocked and saddened.
“The Met is a family. Policing is a family, within London and across the United Kingdom, and today we are all mourning a great loss.
“I would like to thank our officers and staff together with colleagues from London Ambulance Service, London’s Air Ambulance and all medical staff who I know did everything they could to save his life.
“A murder investigation is under way and officers are working at several crime scenes to secure evidence and to establish the exact circumstances of this incident.
“We are working closely with the Independent Office for Police Conduct.
“Early indications are that the suspect shot himself. This has not yet been established as fact. The man remains in a critical condition in hospital.
“I understand that there is considerable interest in the identity of the officer but we have not yet been able to inform all of his close family.
“The investigations will establish the full facts of what happened. I would ask you all to show restraint in speculating on what took place.
“This terrible incident underlines once again how police officers face danger every day in their work to protect the public.
“I will issue more information when I can later today.”
The Commissioner has today spoken to media following the terrible incident. A video is available here.