The country's defence establishment has been hit by what seems to be another major scandal, forcing the government to order a CBI probe into allegations that global engine manufacturer Rolls-Royce committed irregularities and violated contractual provisions to bag contracts worth over Rs 10,000 crore from 2007 to 2011.br br The CBI probe, which was confirmed by defence ministry officials on Sunday, comes soon after alleged Indian-origin arms dealer Sudhir Choudhrie, who has for long been under the scanner of CBI and Enforcement Directorate, and his son Bhanu were arrested in London last month.