Michelle Trachtenberg was found in her New York City apartment, and the death is not believed to be suspicious, police said.

Police officers, responding to a 911 call, found her unresponsive in a Manhattan apartment on Wednesday morning, the authorities said.

Actress Michelle Trachtenberg, famed for her roles in 'Buffy the Vampire Slayer' and 'Gossip Girl', has passed away at 39. Found unresponsive in her Manhattan apartment, she had recently been undergoing a liver transplant.