Harrison Police Chief David Hall refuse to identify the man.
"We’re classifying it as an accidental overdose of prescription sleeping pills," Hall added.
Thomas had reportedly consumed approximately 10 Lunesta pills, a prescription sleep aid, according to the New York Daily News.
"He was unconscious, but breathing on his own," Hall said. The patient was taken to White Plains Hospital where his stomach was pumped.
Thomas' tenure in New York has been an extremely rough one. In his first season, the team went 33-49 and missed the playoffs. Things only got worse last year, with the team winning 10 fewer games.
More troubling still was the sexual harassment suit brought in the summer of 2007 against Thomas and the team over his treatment of a former executive, Anucha Browne Sanders. The team eventually had to shell out $11 million in an October settlement.
"I'm innocent, I'm very innocent, and I did not do the things she has accused me in this courtroom of doing" Thomas said after the decision.
Thomas was fired on April 18.