• FBI agents executed search warrants at two homes owned by Indiana University computer science professor XiaoFeng Wang and his wife, Nianli Ma.
• The university removed the online profiles of both Wang, who has researched cryptography, privacy and cybersecurity, and Ma, an IU library systems analyst.
• Wang's work at the university's Luddy School of Informatics, Computing and Engineering has been funded by multiple federal government agencies.
• A criminal defense lawyer who worked on the federal criminal investigation of then-President Bill Clinton was at the couple's Carmel home when FBI agents searched it.

FBI agents executed search warrants Friday at two homes owned by computer science professor XiaoFeng Wang and his wife, who both work at Indiana University, authorities said, as questions swirled over their status at the school on Monday.

Wang researched cryptography, privacy and cybersecurity at the university's Luddy School of Informatics, Computing and Engineering.

Indiana University has removed the online profiles of both Wang and his wife, Nianli Ma, a systems analyst and programmer in the university's library division.

An Indiana University spokesman responded to questions from CNBC on Monday about the couple's employment status by saying, "I'll refer you to the FBI for any information."

An FBI spokeswoman said, "I can confirm the FBI executed federal search warrants at homes in Carmel and Bloomington Friday."

"We have no further comment at this time," the spokeswoman said.

There is no record of any federal criminal case against either Wang or Ma.

Wang, who has been at Indiana University for two decades, has been the associate dean for research at the Luddy School, according to an archived profile page.

That page notes that his work has been funded by multiple federal agencies and that he has been the principal investigator for research projects totaling nearly $23 million.

"Dr. Wang's research focuses on system security and data privacy with a specialization on security and privacy issues in mobile and cloud computing, and privacy issues in dissemination and computation of human genomic data," notes a Luddy School page that was still online as of Monday.

The couple did not immediately reply to a message from CNBC requesting comment.

CNBC has also requested comment from Jackie Bennett Jr., an Indianapolis criminal defense lawyer. Bennett was seen arriving at the Carmel, Indiana, home Friday with a woman believed to be Ma.

FBI agents, assisted by Department of Homeland Security agents, searched the residence for more than four hours and removed boxes containing unknown items.

Video obtained by WTHR-TV of the FBI search at the Carmel residence also shows an agent snatching a phone from the woman believed to be Ma, as she stood in front of the home.

While the Carmel search was being conducted, FBI agents also searched the couple's Bloomington home. Indiana University is located in Bloomington, about 70 miles southwest of Carmel.

Bennett, the attorney, is a former federal prosecutor who served in the office of independent counsel Kenneth Starr from 1995 to 1999, when Starr was conducting a criminal investigation of then-President Bill Clinton.

Bennett questioned Clinton during the president's testimony before a grand jury regarding his sexual relationship with White House intern Monica Lewinsky.