In its biggest ever probe into corruption in defence deals, Italy is investigating allegations that helicoptermaker Agusta Westland paid a commission of Euro 51 million (over Rs 350 crore) to a Switzerland-based consultant for a deal to sell 12 VVIP choppers to India. Reports in major Italian newspapers like La Repubblica and Il Messaggero say investigators raided the Swiss offices of the consultant, Guido Ralph Haschke, after a former top employee of the helicopter company revealed that he was hired to “facilitate” the Rs 3,546-crore deal with India.