The ISIS-inspired female terrorist in the recent mass-killings in San Bernardino, Calif., reportedly entered the country on a so-called “fiancé visa” that listed a false or at least inaccurate foreign home address.

The woman, Tashfeen Malik, listed an address in her home country of Pakistan. This summer, she received her Green Card, which allows immigrants to legally live and work in the United States, according to ABC News.

The Department of Homeland Security did not respond Saturday to a Fox News’ request for comment.

The issue is raising questions about the U.S.’s vetting process for immigrants, amid growing concerns that Middle East terrorists could be slipping into the country.

Malik and husband Syed Rizwan Farook apparently killed 14 people Wednesday in San Bernardino, about an hour east of Los Angeles.