WASHINGTON—Iran launched U.S. Navy veteran Michael White following nearly two a long time in custody on Thursday as element of a prisoner offer negotiated with Iran, a U.S. official and other individuals involved in the exchange reported.

Mr. White, who experienced from acute asthma and a recurrence of cancer in prison, was launched on professional medical furlough to the Swiss Embassy in March on the condition he remained in Iran. He afterwards was identified with Covid-19 and admitted to an Iranian clinic.