undetermined

Several researchers also said that they found Kennedy’s insistence that autism stems from exposure to an undetermined environmental source perplexing.

The remaining eight were undetermined or remain under investigation, it said.

Days after Trachtenberg’s sudden death, the New York City Office of the Chief Medical Examiner said the actor’s official cause and manner of death would remain undetermined, citing her family’s request.

Michelle Trachetenberg’s cause and manner of death will remain undetermined after her family objected to having an autopsy conducted on her body.

The exact cause of death was “best classified as undetermined.”