Armed police are among officers who have been called to a reported stabbing at a hospital.
One man has been arrested, the Metropolitan Police said.
Some reports on social media suggested that patients at Central Middlesex Hospital in north west London had to shelter in safe rooms, but this has not been officially confirmed.
We're aware of an incident at Central Middlesex Hospital in #Brent. Armed officers are among those responding.
A man has been arrested.
More information to follow.
— Brent MPS | North West BCU (@MPSBrent) June 21, 2023