(FOX News) – Actress Michelle Trachtenberg was found dead
in a New York City apartment today. She  was 39.

Authorities found Trachtenberg after responding to a 911 call
around 8 a.m. local time. The actress was unconscious and unresponsive, according to the New York Police Department.

Police sources told ABC-7 that Trachtenberg had recently
undergone a liver transplant and may have been experiencing complications.

The actress starred as Dawn Summers on "Buffy the Vampire
Slayer" for three years. The series ran from 1997-2003 on WB.

At 12:18 p.m., a terrorist bomb exploded in a parking garage of
the World Trade Center in New York City, leaving a massive,
multi-story crater and causing the collapse of several steel-
reinforced concrete floors in the vicinity of the blast.

Although the terrorist bomb failed to critically damage the main
structure of the skyscrapers, six people were killed and more
than 1,000 were injured, many severe.

The World Trade Center itself suffered more than $500 million in
damage. After the attack, authorities evacuated 50,000 people
from the buildings, hundreds of whom were suffering from
smoke inhalation. The evacuation lasted the whole afternoon.