The police have extended their investigation to previous 'Produce 101' seasons.

The Seoul Police District said, "We are currently investigating the 4th season of 'Produce 101' ('Produce X 101'), and we are now also looking to see if there were fraudulent parts during the previous seasons of 1-3."

The police said, "We have confiscated the data from season 4. However, a lot of suspicions rose, so we are gathering further data. As for if the data changes the final rankings, we will let you know once the investigations are over." However, they revealed, "'Idol School' is not being investigated."