Source: Associated Press

London’s transportation authority has closed three London Underground stations near London Bridge, where police say they are dealing with an incident and witnesses report seeing a vehicle hitting pedestrians.

An eyewitness tells Sky News he saw people who seemed to have been run over and people being placed in an ambulance covered in blankets.

London Metropolitan Police have said only that they are dealing with an incident on the bridge, and London Mayor Sadiq Khan tweeted that people should follow police on Twitter for updates.

Another eyewitness tells Sky he heard a burst of gunfire during the incident.