Former Atalanta captain Cristiano Doni and 16 other people were arrested across Italy Monday in an ongoing investigation into match-fixing and illegal betting on games. The inquiry is focused on several matches in Serie B over the past two seasons — with three of the matches including Atalanta. Three Serie A matches from last season are also under investigation: Brescia vs. Bari, Brescia vs. Lecce and Napoli vs. Sampdoria. “This is not the end but just a starting point,” Cremona prosecutor Roberto Di Martino said. “At the top of the organization are men from Singapore who are those who move the money, but the shareholders are divided from the West, to the Far East, to South America and they manage with their men how to change the outcome of football matches.” Others arrested Monday include former Inter Milan and Roma player Luigi Sartor, former Serie B player Alessandro Zamperini and active players Carlo Gervasoni of Piacenza and Filippo Carobbio of Spezia. Charges include criminal association and sporting fraud.