Ruling Justice and Development Party (AK Party) deputy chairman Erol Kaya said investigations launched against 820 party members over their links to faith-based Gülen movement that government accuse of being behind a failed coup attempt on July 15, 2016.

Speaking to pro-government Sabah daily on Tuesday, Kaya said seven AK Party mayors out 63 who were investigated for their links with the movement were expelled from the party.

“Investigations are still going on about sixteen AK Party mayors while 40 of them had no links [with Gülen movement] according to investigations,” he said.

He also underlined that media reports saying 82 AK Party members were investigated over using ByLock, a smart phone application that authorities believe is a communication tool between members of the Gülen movement, are not true.

Turkey survived a military coup attempt on July 15 that killed over 240 people and wounded more than a thousand others. Immediately after the putsch, the government along with President Recep Tayyip Erdoğan pinned the blame on the Gülen movement.

Tens of thousands of civil servants have either been dismissed or arrested for using the application. Critics say the use of a technological application is not a criminal activity nor is it evidence of membership in a terrorist organization.

In October last year, a high criminal court in Hatay province rejected an indictment prepared on members of the so-called Fethullahist Terrorist Organization (FETÖ), a term used by the Turkish government to describe the Gülen movement, saying that there is no such terrorist organization officially identified.

The same court also said use of the ByLock application alone cannot be considered a crime. The court added that it is not known when the suspects downloaded the application, with whom they communicated using it and what the content of their conversations was, saying that they cannot be accused simply for downloading ByLock.

According to reports, Turkey’s Security Directorate General and the National Intelligence Organization (MİT) have an IP address list of the people who downloaded ByLock, but they don’t have the content of the conversations made over the application.

Judicial experts suggest that a person cannot be accused for using a certain means of communication, adding that they can be accused only if there is an element of crime in their messages. They also say that a court order is required to conduct technical surveillance and to be able to present the findings in court as evidence.

Technical surveillance data collected without a court order is not considered legal evidence by Turkish courts.

This article originally appeared in Turkish Minute on Feb. 8.