Francis Scott Key Bridge in Baltimore collapsed after a container ship ran into it

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In the US city of Baltimore, the fire department has declared a mass casualty incident after a major bridge collapsed into the water. That's after being struck by a cargo ship.

Police say they're trying to rescue up to 20 people from the water. It happened just before 1:30AM local time.

The ship caught fire on impact. It was a Singapore-flagged vessel, headed to the Sri Lankan capital.

Al Jazeera's Mike Hanna is in Washington, DC for the latest.