Chairman National Accountability Bureau (NAB) Qamar Zaman Chaudhry has lauded the outstanding performance of the Lahore Bureau under the supervision of its DG Major Syed Burhan Ali (Retd) with an Operational Efficiency Index (OEI) of 89.24 percent and said that it played prominent role in contributing to overall performance of the NAB. Qamar Zaman Chaudhry on Saturday visited NAB Lahore Regional Bureau to review its performance on the basis of annual inspection conducted by Chairman's Inspection & Monitoring Team (CI&MT).