The severed head of a newborn was found in a market area near Habra State General Hospital in North 24 Parganas on Sunday. Locals claimed that a dog had dragged the baby's head from the hospital area to the road. Police rushed to the spot and recovered the head. However, locals demanded a serious investigation into the incident. 'We have already started an investigation. We have also spoken to the hospital authorities in this regard,' said a police officer.