Pakistan’s Federal Investigation Agency has arrested six people for their alleged involvement in the fake pilot licence scandal that emerged after a Pakistan International Airlines A320 crashed last year according to Reuters.

“Five Civil Aviation Authority (CAA) officials and a pilot have been arrested,” the Federal Investigation Agency said in a statement to Reuters.

At least 40 pilots and eight officials from the CAA’s licence branch have been named in three cases registered by the agency’s corporate crime wing Reuters reports.

“We have found a money trail in the investigation, each pilot paid a minimum of $312.50 for each paper they were supposed to appear in,” Abdul Rauf Shaikh, a senior FIA official, told Reuters.