A 47-year-old woman has been arrested after four men were stabbed in Covent Garden in central London, the Metropolitan Police said.
The men, aged 34, 39, 42 and 52, were taken to hospital after emergency services were called to reports of a stabbing in Endell Street at about 12:30 BST.
In a statement, London Ambulance Service said: “We treated four patients at the scene and took them all to a major trauma centre as a priority by road.”
The woman has been arrested on suspicion of possession of an offensive weapon and assault.