Alireza Doroudi's detention comes as the Trump administration has moved to revoke visas for hundreds of noncitizen students across the U.S.

A doctoral student at the University of Alabama has been arrested and detained by immigration authorities, as the Trump administration continues to target non-U.S.

The administration has cited a rarely used statute allowing the secretary of state to revoke visas for noncitizens deemed a threat to foreign policy interests.