Burlington County Prosecutor Robert Bernardi said Friday night that there were no signs of trauma to 18-year-old Sarah Townsend's body and no indication that foul play contributed to her death.
He says a final autopsy is awaiting the results of toxicology tests, which will take several weeks.
Townsend was last seen Monday morning when she left her family's home in Florence to go to school. Her body was found Friday in a pond in Burlington Township's Green Acres Park near where her car had been discovered.
Police Director Walter Corter said Wednesday that authorities were told Townsend may have wanted to harm herself. But Townsend's parents say their daughter was happy when she left home Monday.
LINK: WPVI STORY