Michelle Trachtenberg's cause of death was ruled "undetermined" by the Office of Chief Medical Examiner in New York City, Fox News Digital confirmed.

Michelle Trachtenberg’s former “Buffy the Vampire Slayer” costar Sarah Michelle Gellar is looking back at their time together on screen and off, one day after Trachtenberg died in New York City.

The cause of death for actress Michelle Trachtenberg has been ruled “undetermined” by the New York City Medical Examiner, according to an agency spokesperson.

Michelle Trachtenberg's cause of death was revealed Thursday after the 39-year-old actress was found dead in New York City Wednesday morning.

The cause and manner of Michelle Trachtenberg’s death are undetermined, according to the New York City Office of the Chief Medical Examiner.

Rosie O’Donnell paid tribute to her former co-star, Michelle Trachtenberg, who was found deadin her New York City apartment on Wednesday. “Heartbreaking,” O’Donnell said in a statement to Us Weekly. “I loved her very much.

Actress Michelle Trachtenberg has died at age 39. The beloved actress was found dead at her apartment in New York City on Wednesday, February 26. The New York Police Department confirmed to People that they responded to a 911 call at 1 Columbus Place around 8 a.

Just days after Michelle Trachtenberg’s death, the Oscars is facing pushback after failing to recognize the 39-year-old actress during its “In Memoriam” tribute. Trachtenberg was discovered dead in her New York City apartment by her mother on Feb.

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

Academy Awards took place Sunday in Los Angeles, where several late movie stars were remembered by their grieving peers.

Eagle-eyed viewers watching the "In Memoriam" segment at the 97th annual Academy Awards expressed their disappointment that actor Michelle Trachtenberg was not included.