Research is underway for a Turin tourist who is missing after a swim in the Viverone lake. The man had taken a boat to the middle of the lake in the company of his family, in an area where the water is very deep. The group stopped to take a bath, but the man never went up again. He probably fell ill. His relatives immediately raised the alarm: the firefighters intervened and started the searches with the divers, but the first attempt was unsuccessful. The carabinieri were also on site.