BOSTON (CBS) – Shabab Dehghani, a Northeastern University college student who was detained at Logan Airport and sent back to Iran before an immigration hearing was held, was deported because of his family’s ties to terroristic groups, CBS News reports.

A U.S. official familiar with information reviewed by authorities told CBS News that Dehghani himself does not have ties to terroristic groups, but “some very close to him” do.

Dehghani is studying economics at Northeastern. He’s been studying in Boston for two years, but was stuck at home in Iran in December 2018 after visiting his family as he waited for his student visa to be renewed.

Dehghani’s attorney, Susan Church, told WBZ-TV he was detained starting Sunday night despite having a legal F1 Student Visa, as he tried to get back to school – and said at the time she didn’t know why.

An immigration hearing was scheduled for Tuesday morning, but Dehghani was deported before it began.

Judge Richard Stearns said during the brief hearing that there was nothing he could do because Dehghani had already been deported. Massachusetts Senator Ed Markey tweeted Wednesday that he still hadn’t heard from U.S. Customs and Border Protection about why Dehghani was turned away.

CBP did not provide me any answers for why it refused entry to Shahab Dehghani. This case is part of a disturbing pattern from the Trump admin of targeting Iranian students. The Trump admin needs to stop any blanket policy denying entry to foreign students without due process. https://t.co/eUK0Opvv0a — Ed Markey (@SenMarkey) January 22, 2020

CBP issued this statement on the situation Tuesday.

Every applicant for admission is subject to inspection upon arrival in the United States. The issuance of a visa or participation in the visa waiver program does not guarantee entry to the United States. Upon arrival at Logan Airport on Sunday, January 19, Mohammadshahad Dehghani Hossein Abadi was deemed inadmissible and processed for expedited removal and return to his place of departure. During today’s hearing, the court ruled that the matter is now moot as the subject was never admitted into the United States, the subject is no longer in custody, and the court does not have jurisdiction to order his return.

Northeastern said it has been in touch with federal officials to try and bring Dehghani back.