A former OpenAI researcher known for whistleblowing the blockbuster artificial intelligence company facing a swell of lawsuits over its business model has died, authorities confirmed this week.

Suchir Balaji, 26, was found dead inside his Buchanan Street apartment on Nov. 26, San Francisco police and the Office of the Chief Medical Examiner said. Police had been called to the Lower Haight residence at about 1 p.m. that day, after receiving a call asking officers to check on his well-being, a police spokesperson said.

The medical examiner’s office determined the manner of death to be suicide and police officials this week said there is “currently, no evidence of foul play.”

Information he held was expected to play a key part in lawsuits against the San Francisco-based company.