A woman found dead on a central Pennsylvania roadside on Valentine's Day has been identified as a Philadelphia woman.

Corinne Pena, 35, had no obvious injuries on her body when a passerby found her Sunday morning on Plainfield Road in Ferguson Township, police said.

An autopsy did not reveal how she died, so the coroner is awaiting toxicology tests before ruling whether the suspicious death was a homicide, accident or otherwise, Ferguson Township Police Chief Diane Conrad said Thursday.

Investigators also are trying to trace her whereabouts before she died and find out whether she has any relationship to the area, Conrad said.

Police believe someone drove Pena - dead or alive is not yet known - to the site where her body was found sometime between 11 p.m. Saturday and 3:20 a.m. Sunday, saying they've found no evidence that she walked there herself.

Pena, who was wearing just gray sweatpants and a thermal shirt when she was found, remained unidentified for a few days. Investigators released several photos of her distinctive tattoos and a wedding band, which helped them identify her. Pena married a woman from Lancaster last May, according to her Facebook page.

Police said Pena has a child in elementary school, but did not reveal anything further.

Conrad expects to release more details on the case sometime within the next week.

The incident is "very unusual" for the rural township just southwest of Penn State University's main campus, Conrad said.

Police late Thursday asked that anyone who knew Pena or or might have information about her presence in Central Pennsylvania call Ferguson police at (800) 479-0050.