The attack happened shortly before 12:30pm on Wednesday along Endell Street, a busy route close to Covent Garden and the Shaftesbury Theatre. Two have since been discharged, while the remaining two are being treated for injuries not believed to be life-threatening or life-changing. Investigators therefore believe it was an isolated incident related to the woman's mental health, adding there is currently no indication of any ongoing risk to the wider public. Images from the scene showed an air ambulance landing in nearby Trafalgar Square as emergency services treated the injured men. The woman remains in custody while detectives continue reviewing evidence, speaking to witnesses and establishing the full circumstances surrounding the attack.