NEW HAVEN, Conn. — The cause of death of a 19-year-old Yale University sophomore from Long Island remained undetermined yesterday, one day after he was found unresponsive in his dorm room.

The Chief Medical Examiner’s Office said autopsy results on Andre Narcisse, of Roosevelt, were pending.

Yale spokesman Tom Conroy said emergency personnel were unable to resuscitate Narcisse after he was found at about 11 a.m. Sunday.

He added that investigators had found no evidence of foul play.