Warrants were issued to detain 119 people who used to work for the private schools that the government shuttered over links to the Gulen movement in Ankara, on Monday.

Ankara Public Prosecutor’s Office issued the detention warrants as part of an investigation into the movement, which the government accuses of masterminding the July 15, 2016 coup attempt. The movement denies involvement.

The suspected 119 people are accused of having used ByLock, a controversial mobile app that Turkish authorities claim once-primary communication tool among the followers of the movement.

Tens of thousands of civil servants, police officers and businessmen have either been dismissed or arrested for using ByLock since the failed coup attempt on July 15, 2016.