Police later confirmed to Parade that Trachtenberg's death was not being investigated as suspicious. At the time of her passing in late February, Trachtenberg's cause of death was

Michelle Trachtenberg's cause of death comes to light more than a month after the 'Harriet the Spy' actor was found unresponsive in her New York City apartment.

The cause of death for 39-year-old actress Michelle Trachtenberg has been revealed as related to diabetes complications, specifically diabetes mellitus. The "Buffy the Vampire Slayer" and "Gossip Girl" star was found dead in her New York City apartment Feb.