Punjab Vigilance Bureau investigations from 2015–17 unearthed a module that leaked question papers printed at a Delhi government press for a dozen recruitment exams across Punjab and neighbouring states — JBT/TGT/NTT teachers, junior engineers, patwaris and corporation engineers among them — with about 70 arrests including candidates and conduits. The patwari exam was scrapped on leak evidence. The alleged head of the module, a Lucknow resident, and a government press employee were arrested in May 2017.