Vanessa Trump is not believed to be seriously harmed
Trump Jr's wife in hospital after opening envelope filled with white powder
US President Donald Trump’s daughter-in-law has been taken to hospital after opening an envelope containing white powder.
Vanessa Trump, who is married to Donald Trump Jr, the president's eldest son, opened the letter which was addressed to her husband at their Manhattan flat.
Police said Mrs Trump complained of nausea afterwards and was coughing hard.
She and two other people were treated by firefighters and taken to hospital, the Weill Cornell Medical Centre, for evaluation.
The New York Police Department and the Secret Service are investigating.
In September, Mr Trump Jr chose to forgo Secret Service protection for himself, his wife and his five children. However, the protection was reactivated a week later.
US authorities have been on alert for mail with white powder in it since 2001, when envelopes laced with anthrax were sent to media outlets and US politicians, killing five people.