People and vehicles fall into water as Baltimore bridge collapses after being hit by ship

A major bridge has collapsed in the US city of Baltimore after it was hit by a cargo ship.

Vehicles can be seen in the video falling from the bridge.

Earlier, Baltimore's fire service said up to 20 people were reported to be in the water, but that number has since been revised.

In an update on Tuesday morning, James Wallace, the chief of Baltimore's fire department, said:

• Two people have already been rescued from the water;

• One of those rescued is in a "very serious condition" and the other was not injured;

• Authorities are still looking for "upwards of seven individuals" in the water;

• There is an active ongoing search and rescue operation in place over a large area;

• The crew of the ship are still on board the vessel but are communicating with the coast guard;

• Sonar devices have detected the presence of vehicles submerged in the water.

Kevin Cartwright, director of communications for the Baltimore City Fire Department, called the incident "a mass-casualty, multi-agency event" that would last for many days.

He said the main focus right now was "trying to rescue and recover these people" and described the collapse as a "developing mass casualty event".

Mr Cartwright said it appears there were "some cargo or retainers hanging from the bridge," creating unsafe and unstable conditions, and that emergency service workers were operating cautiously as a result.

"This is a dire emergency," he added.

The White House said it is "closely monitoring" the situation and its "hearts go out" to the families of those who are missing after the "horrific incident".

In a statement, it said: "The US Coast Guard is conducting search and rescue for those who remain unaccounted for as a result of the bridge collapse.

"Senior White House officials are in touch with the governor and mayor to offer any federal assistance they need. There is no indication of any nefarious intent."

The container ship, known as the Dali, was headed to Colombo in Sri Lanka at the time of the collision.

Data from MarineTraffic showed the Singapore-flagged ship came to a halt at the bridge before two tug boats arrived at the scene.

CCTV and marine tracking data shows the Dali lose power, adjust its course and start smoking around 60 seconds before it hits the bridge.

At least 10 boats are currently involved in the rescue operation.

The same ship was previously involved in a minor incident when it hit a quay at the Port of Antwerp in Belgium in 2016, according to Vessel Finder and maritime accident site Shipwrecklog.

David McFarlane, director of Maritime Risk and Safety Consultants Ltd, told Sky News that the most likely cause of the incident is a "failure in machinery or steering gear" rather than human error.

He said: "The first thing that springs to my mind is: was there a sudden fault with the ship's engines or the steering gear? The other, of course, is: was there a navigational error?"

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Bridge is 'major artery' for locals

The bridge, which is referred to locally as the Key Bridge, was described as a "major artery" for the area by resident Michael Brown.

"This is like an April Fools' joke right now," Mr Brown told Sky News' US partner network NBC.

"It [the bridge] is a major artery in the area not only for traffic but for the port, hopefully everyone is okay that is involved."

Mr Brown said he uses the bridge to visit family and its destruction is a "major issue" - but he noted the "emphasis should be on getting whoever is in the water out".

"We have boats come through here all the time but not once have I seen a boat come close to hitting the bridge," he said.

All lanes on the Interstate 695 - the road which runs across the bridge - were closed and traffic was rerouted by the Maryland Transport Authority.

Built in 1977, the bridge is one of the longest continuous truss bridges in the world, according to the National Steel Bridge Alliance.

It was named after the writer of The Star-Spangled Banner, the national anthem of the US.

-sky news