U.S. immigration authorities have detained and revoked the visa of a Turkish doctoral student at Tufts University near Boston who had voiced support for Palestinians in Israel¡¯s war in Gaza.

Rumeysa Ozturk¡¯s supporters say her detention late on Tuesday is the first known immigration arrest of a Boston-area student engaged in such activism to be carried out by administration of U.S. President Donald Trump, which has detained or sought to detain several foreign-born students who are in the U.S. legally and have been involved in pro-Palestinian protests.

The actions have been condemned as an assault on free speech, though the Trump administration argues that certain protests are antisemitic and can undermine U.S. foreign policy.