Meanwhile, Robert Morris University is expected to report in coming days what it has learned in its own inquiry on the three years Rice spent as head coach there.
A person familiar with the FBI's probe told The Associated Press on Sunday that investigators are interested in Eric Murdock, who left his job as the men's basketball program's player development director last year and later provided the video to university officials and ESPN.
The person spoke on condition of anonymity because the inquiry has not been announced. The investigation was first reported last week by ESPN and The New York Times.
A spokeswoman for the FBI's Newark office said the agency would not say whether there is an investigation. Murdock's lawyer did not return a call to the AP on Sunday. A Rutgers spokesman referred questions to the FBI.
A December letter from Murdock's lawyer to a lawyer representing Rutgers requested $950,000 to settle employment issues and said that if the university did not agree by Jan. 4, Murdock was prepared to file a lawsuit. The letter was obtained last week by the AP and other media outlets.
No settlement has been made. The video became public last week, and Murdock on Friday filed a lawsuit against the university, contending he was fired because he was a whistleblower trying to bring to light Rice's behavior.
The video's release last week set off a chain reaction that led to Rice's firing and the resignations of athletic director Tim Pernetti, the university's top in-house lawyer and an assistant basketball coach. Some critics want the university's president, Robert Barchi, to resign.
Barchi was holding a town hall meeting Monday at the school's Newark campus, where he was expected to face some students and faculty who say they lost confidence in him even before the controversy over Rice's firing. They have said his plan to reorganize the state's higher education system shortchanges the Rutgers campuses in Camden and Newark.
At a news conference last week, Barchi said the firing and resignations likely never would have happened unless Murdock provided the video to ESPN. Barchi said he did not see the video himself until after it had been made public.
Murdock, a New Jersey native who played for seven NBA teams from 1991 to 2000, was on the initial staff Rice assembled when he became the Rutgers coach in 2010. He left the team last year, though there are conflicting stories about the circumstances.
Murdock has said Rice fired him after he skipped a session of Rice's summer basketball camp, but has said he was targeted because he had spoken with others about Rice's conduct at practice. The university found in a report that Murdock was not actually fired and that he could have continued working at the school.
After Murdock left, he spoke with university officials about his allegations against Rice. He also used an open public records request to obtain hundreds of hours of videos of basketball practice. It's not clear who shot the original footage, but it was edited into the half-hour video later given to the university that touched off a scandal last week.
The university report on Rice, which was completed in December but not made public until Friday, criticized the video provided by Murdock as taken many situations out of context. While the report found fault with Rice's behavior in several instances, it also said he did not create a hostile work environment, as Murdock had suggested.
The report also said that Murdock had claimed some violations of NCAA rules - including that he and others in the program paid players - but he did not provide evidence.
After a review, university officials agreed to suspend Rice without pay for three games, fine him $50,000, send him to anger-management counseling and monitor his behavior.
Barchi said when he first saw the video last week he immediately decided Rice could not continue as coach.
Robert Morris officials said athletic director Craig Coleman could speak about the matter Monday or Tuesday. Rice coached there before leaving for Rutgers in 2010.
Murdock told ESPN in an interview last week that coaches brawled with players during Rice's time at the Pennsylvania college. Robert Morris officials initially said that the video of Rice at Rutgers was not representative of how he acted at Robert Morris.
Associated Press writer Katie Zezima in Newark and AP sports writer Tim Sullivan contributed to this report.