A court ruled that ex-President Donald Trump must answer questions under oath in a New York civil probe (Picture: AP)

Former President Donald Trump has lost an appeal effort and must answer questions under oath in a New York civil investigation into his company, a court has ruled.

A state appeals court on Thursday upheld Manhattan Judge Arthur Engoron’s February ruling requiring subpoenas for Trump and his two oldest children to give depositions in New York Attorney General Letitia James’ probe.

Trump filed an appeal and tried to overturn the decision. The ex-president’s attorneys argued that Trump, Donald Trump Jr and Ivanka Trump testifying would violate their constitutional rights because their responses could be incorporated in a separate, criminal probe by the Manhattan District Attorney’s Office.

However, the four-judge panel in the state trial court’s appellate division wrote: ‘The existence of a criminal investigation does not preclude civil discovery of related facts, at which a party may exercise the privilege against self-incrimination.’

‘The political campaign and other public statements made by OAG about appellants do not support the claim that OAG initiated, or is using, the subpoenas in this civil investigation to obtain testimony solely for use in a criminal proceeding or in a manner that would otherwise improperly undermine appellants’ privilege against self-incrimination,’ the decision states.

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