A French tourist beat his 4-year-old daughter's head against the stone base of a Rome monument so hard the child was left in a coma, AP quoted police as saying Sunday. Bambino Gesu pediatric hospital said the child was comatose with severe head injuries when she was admitted shortly before midnight. «Her condition is stable but very critical,» Daniela Perrotta, from the hospital's anesthesia department, told reporters outside the hospital. Carabinieri Lt. Col. Antonello Casarsa said the man, identified as Julien Monnet, 37, repeatedly struck the head of his daughter, Luna, against the stone after a traffic officer asked to see some identification. A Canadian tourist had told police the man was acting strangely toward the child. Monnet was arrested for investigation of causing grave injury and taken to Rome's Regina Coeli jail, Casarsa said. He appeared to be in a state of shock when arrested, Casarsa said.