CNN image(CNN) - Italian police have launched an investigation into a shocking image that shows one of the two young Americans arrested over the killing of an Italian police officer, blindfolded at a police station in Rome.
The provincial Carabinieri command of Rome is quickly carrying out investigations to locate who is responsible," police said in a statement Sunday.
Officer Rega, 35, was stabbed eight times at 2 a.m. local time on Friday, in the Prati neighborhood of Rome, near the hotel where the two young men were staying, police said.
The two Americans, both from San Francisco, were arrested inside their hotel room in Rome.
Slain police officer Rega had only recently returned to work from his honeymoon after getting married on June 13 in his hometown of Somma Vesuvianna, near Naples.