At least 11 businessmen were detained as part of an investigation into the Gülen movement in the central Anatolian province of Konya, on Tuesday.

Arrest warrants were issued for 17 business professionals and police rounded up 11 of the suspects, who are accused of having used ByLock mobile app.

Police still seek the remaining 6 people.

Turkish authorities believe using ByLock is a sign of being a Gülen follower as they see the mobile phone application as the top communication tool among the group. Tens of thousands of civil servants, police officers and businessmen have either been dismissed or arrested for using ByLock since the failed coup attempt.

The military coup attempt on July 15 killed 249 people and wounded more than a thousand others. Immediately after the putsch, the Justice and Development Party (AK Party) government along with President Recep Tayyip Erdoğan pinned the blame on the Gülen movement and initiated a widespread purge aimed at cleansing sympathizers of the movement from within state institutions, dehumanizing its popular figures and putting them in custody.

Turkey’s Justice Ministry announced on July 13 that 50,510 people have been arrested and 169,013 have been the subject of legal proceedings on coup charges since the failed coup.

Meanwhile, 4 lawyers in Isparta and 15 teachers and school staff in 6 different provinces were rounded up in separate investigations into the Gulenists.