The NYPD confirmed Trachtenberg was found “unconscious and unresponsive” by police and pronounced dead by EMS workers. Her death is not deemed suspicious. Trachtenberg shared a throwback photo with Instagram followers on Feb. 18. The close-up shot showed the “Gossip Girl” vet on the red carpet.

The cause of death for Michelle Trachtenberg, the “Gossip Girl” and “Buffy the Vampire Slayer” star, will remain undetermined as her family declined an autopsy, Variety has confirmed. Families can decline autopsies when there is so evidence of foul play or for religious reasons.