Police are responding to a stabbing at a shopping centre in Manchester in which four people were injured.
Greater Manchester Police tweeted they were responding to an incident at the Arndale Centre just after midday on Friday.
Social media posts showed a large number of officers at the scene.
A spokesman for the force said so far there had been no reports of any fatalities.
North West Ambulance Service said it had treated four people at the scene after being called at 11.17am to a stabbing incident.
“We are still on the scene. It is a stabbing incident.
“We’ve got quite a few resources there,” a spokesman for the service said.
They refused to give details on the severity of the injuries.