Two Metropolitan police officers have been taken to hospital after being stabbed near Leicester Square in central London this morning.
A spokesperson for the Met Police said the incident occurred around 6am this morning, the suspect was Tasered and arrested on suspicion of assaulting an emergency worker and grievous bodily harm.
A male officer was stabbed three times in the neck and once in the chest while a young female officer was stabbed in her arm, resulting in a potentially life-changing injury.
Police commissioner Sir Mark Rowley said that the male police officer is expected to make a full recovery.
The incident is not being treated as terror-related.
Both officers are part of Scotland Yard's Central West Command Unit and were carrying out routine duties when the attack took place.
A spokesperson for the London Ambulance Service said that they were called to reports of an incident in Great Windmill Street, near Shaftsbury Avenue at 6.01am.
They confirmed that the air ambulance, an emergency response car, and three ambulances were dispatched to the scene.
London Mayor Sadiq Khan said: "My thoughts and prayers are with them, their loved ones, and police colleagues following this disgraceful attack.
"Attacks against the police will not be tolerated and any perpetrators will be caught and prosecuted."
Police said inquiries into the "circumstances surrounding the incident are ongoing".