In 2009, the CBI arrested the just-retired chief of Ordnance Factory Board Sudipto Ghosh and several of his associates for fixing contracts of OFB.
After CBI found evidence of bribery, the government in March 2012 blacklisted six companies for 10 years—Singapore Technologies, Israeli Military Industries, Germany's Rheinmetall Air Defence, Russian firm Corporation Defence, Indian firms T S Kisan & Company and R K Machine Tool.