Italian and Israeli agents among four dead after boat capizes in Lake Maggiore

Tourist boat was reportedly carrying more than 20 people when it was struck by a whirlwind on Sunday

Two agents from the Italian intelligence services and a retired member of the Israeli security forces were among the victims when a tourist boat capsized and sank in a sudden, violent storm in a northern Italian lake, it has emerged.

Claudio Alonzi, 62, and Tiziana Barnobi, 53, who both working for Italian intelligence, were officially named on Monday by officials.