Sixteen contractors cheated the city of Rs 572 crore by cutting corners in construction of over 200 roads, a high-level BMC probe has revealed. The municipal corporation has now decided to not only stop payments to the guilty contractors, but also recover the money already paid to them. While six of the sixteen contractors already have FIRs registered against them, police cases against the rest will be registered once the probe report is formally submitted to Municipal Commissioner Ajoy Mehta.