FBI, Philly police dig up Horsch backyard at home tied to 7 missing women in possible serial killer probe

Police and the FBI have returned to dig up the backyard of a Philadelphia home as part of an ongoing investigation into a potential serial killer that has already turned up apparent "snuff" films, ash-filled urns and evidence linked to at least seven missing women.

Images show an excavator in the backyard as police in protective gear continue to come and go from the property this week. They've set up tents in the backyard and out front and covered parts of the lawn in tarps. Investigators...