Hundreds of foreign students across the US have had their visas revoked suddenly and without explanation, lawyers say.

Nineteen international students at the University of Texas at Dallas had visas terminated by United States government officials, university administrators said Wednesday. Earlier today, Texas A&M University officials said 15 students at the College Station and Galveston campuses had visas revoked as well.

The Department of Homeland Security revoked the visas of international students at Harvard University, University of Michigan, Stanford University, University of California, Los Angeles, Ohio State University and more.

Dozens of schools found out about revoked visas only after checking a federal database. Some are related to Israel-Gaza war protests, others are not.

Colleges say the cancellations have caused fear and confusion on campuses across the U.S.

At least 147 international students were abruptly stripped of their ability to stay in the United States in recent days, according to universities and media reports, sowing fear among students.

UW, Seattle University, WSU and Gonzaga reported visas had been revoked for over a dozen international students and recent graduates.

More than a dozen University of Utah students affected by widespread immigration actions against international students.

At least three Berklee students and one Emerson student had their student visas revoked by the federal government.