According to a Monday report from Bloomberg, citing people familiar with the matter, former FTX Director of Engineering Nishad Singh met with federal prosecutors at the Southern District of New York US Attorney’s Office last week.

Singh attended a proffer session, where prosecutors determine whether or not the individual in question has sufficient information to warrant a limited immunity deal.

Singh’s meeting with prosecutors comes after a report revealed that authorities were turning their attention to him to investigate the nature of his role at FTX and possible involvement with the fraud that transpired at the exchange.

Unlike his former colleagues, including Bankman-Fried, Caroline Ellison and Gary Wang, Singh has not been formally charged with any wrongdoing. However, the former engineering head is believed to have been involved with writing some of the code that allowed for Alameda Research’s “backdoor access” to FTX.

Any testimony from him will likely further damage Bankman-Fried’s case in court, adding to a mounting pile of evidence against the FTX founder from Ellison and Wang in their own guilty pleas last month. Bankman-Fried pleaded not guilty to all the charges against him in his arraignment hearing last week.

One particular area that Singh could likely shed light on are the allegations of campaign finance violations against Bankman-Fried. Bloomberg reported that Singh donated over $9.3 million to Democratic candidates and committees since 2020. One of the largest recipients of Singh’s donations was the Mind The Gap political action committee, founded by Bankman-Fried’s mother Barbara Fried.

“If you participated in misconduct at FTX or Alameda, now is the time to get ahead of it,” said US Attorney Damian Williams after announcing guilty pleas from Ellison and Wang  on Dec. 21.

“We are moving quickly, and our patience is not eternal,” he added.