At least two of the people injured in a commuter ferry accident in New York are in critical condition, and nine others are in serious condition, a city official has said.
The accident took place at 8.43am, as the high-speed catamaran was docking in lower Manhattan.
More than 50 people were injured in the incident, New York City Department of Transportation Commissioner Janette Sadik-Khan said at a press briefing held near the scene.
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The letter calls for an end to harassment, abuse, and impunity in a world "ripe for change".
Police say that anyone who sees Whitehouse should not approach him, but instead call them on 999 and quote incident 23 of 18 February.