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A crash involving an amphibious tour bus in Seattle has killed four people and left 12 others in a critical condition.
The Ride the Ducks vehicle collided with a charter coach carrying foreign college students on a bridge.
The city fire department said 44 patients were taken to hospital with a mixture of critical and serious injuries.
Firefighters and medics evaluated some 50 people for injuries at the accident scene.
A witness told the Seattle Times the side of the bus was torn off as the duck boat ploughed into it, Sky News reported.
Students and staff from North Seattle College’s international programme were involved in the crash.