Immigration and Customs Enforcement agents raided the Annandale offices of the University of Northern Virginia on Thursday and notified the school it may lose its authorization to admit foreign students.

An ICE spokeswoman declined to discuss the details of the raid, saying it was part of an ongoing investigation of UNVA, an unaccredited, for-profit school which caters to a largely foreign student body.

“ICE Student and Visitor Exchange Program issued a notice of intent to withdraw UNVA authorization to admit foreign students,” said Cori W. Bassett, an ICE spokeswoman.

No one was arrested. School officials could not be reached for comment, but the university’s founder Daniel Ho told the Chronicle of Higher Education that agents took away boxes of paperwork and computer. “We have nothing to hide,” he told the Chronicle.

UNVA now has 30 days to show it is conforming with federal rules for administering student visas. The school can still hold classes, but will be blocked from accepting new international students. The school has 2,300 students enrolled and 90 percent are from India, Bassett said.

The university was one of the subjects of a Chronicle investigation earlier this year. The piece found little-known and often unaccredited colleges are exploiting visa loopholes to allow foreign nationals to live in the United States.

Federal authorities raided a California school with a similar business model in January calling it a ”sham university.” Tri-Valley University allegedly admitted foreign students and collected tuition from them, but did not require them to attend classes.

University of Northern Virginia students who have questions about how the situation affects them can call the ICE International Student and Visitor Exchange Program response center at 703-603-3400. ICE has also setup up a Web page with information for students.