US bridge collapses after being struck by large ship

A portion of a bridge in the US state of Maryland has collapsed after a large boat struck it, causing multiple vehicles to fall into the water below.
Baltimore Mayor Brandon Scott says he is aware of the incident at the Francis Scott Key Bridge in the city, and is in contact with local authorities.
Scott says: "I'm aware of and en route to the incident at the Key Bridge. Emergency personnel are on scene, and efforts are underway."
Baltimore's city police have just confirmed with us that it is possible that there are workers in the water after the Key Bridge collapse.