A total of a hundred high-ranking military officers have been arrested by a court on charges of using ByLock, a smart phone application that authorities believe is a communication tool between members of the Gülen movement.

The T24 news portal reported on Friday that the İstanbul Public Prosecutor’s office had previously launched an investigation into a total of 575 officers over the use of ByLock. So far, 351 of them have been detained by police and an İstanbul court on Friday arrested 100 of them.

Tens of thousands of civil servants, police officers and businessmen have either been dismissed or arrested for using the application.