Pune, July 11: Three persons have been arrested on charges of extorting money from builders using the name of underworld dons Chhota Rajan and Balu Dokre gang, police here said today. The accused, identified as Pramod P Sathe (41) of Kothrud, Basvraj R Kulkarni alias Appa (50) of Warje-Malwadi and Nagesh Krishna Desai (28) of Mulund, Mumbai were arrested by the police following a tip-off, they said. Bureau Report