The woman found dead in residential and historically safe Pennypack Park early Tuesday was strangled, a crime that had homicide detectives on Wednesday seeking the public's help.
Constance McClain-Murray, 46, went out jogging about 9 p.m. Monday and never returned, Homicide Capt. James Clark said at an afternoon news conference.
Clark said detectives had not yet determined a motive in the killing, and he did not say how McClain had been strangled. He said there was no sign that she had been sexually assaulted.
The department has no suspects, Clark said, and detectives are combing the area around Pennypack Park for surveillance videos and evidence. He said McClain-Murray had a cellphone and headphones with her when she went out, but neither were found at the crime scene. Police were searching the area for them.