NEW YORK — Michelle Trachtenberg, the “Buffy the Vampire Slayer” and “Gossip Girl” actress who was found dead in a Manhattan apartment in February, died from complications of diabetes, the New York City medical examiner’s office said Wednesday.

The medical examiner’s office initially said that the cause and manner of Trachtenberg’s death was “undetermined.” The office amended that conclusion this week after reviewing toxicology test results, spokesperson Julie Bolcer said Wednesday, ruling that she died a natural death from complications of diabetes mellitus.

Officers with the New York Police Department found Trachtenberg, 39, unconscious and unresponsive in the apartment after responding to a 911 call just after 8 a.m. Feb. 26. She was pronounced dead by emergency medical workers, who had also responded, authorities said at the time.

No autopsy was performed because of religious objections from Trachtenberg’s family, Bolcer said.

Trachtenberg began acting in commercials at age 3.

— The New York Times