Karpeles and Mt. Gox have been accused of fraud in a class-action suit in the U.S., to which he was summoned for questioning by a Texas court in connection with the exchange's collapse.
A judge in the U.S. Bankruptcy Court for the Northern District of Texas, however, granted a motion by Karpeles' lawyers to delay his deposition, which had been scheduled for April 17.
Taking into account developments at the Tokyo District Court, the judge said a new date would be decided on or after April 24.
Karpeles could not be reached for comment.
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