Semra Köse, the wife of Ömer Köse, one of the police chiefs who led corruption and bribery operations against the Turkish government back in 2013, has been sent to prison over links to the Gulen group, the Turkish media reported.

Köse is accused of using ByLock mobile app, which is considered by the government to be a tool of secret communication among supporters of the Gulen group.

The group is accused by the Erdogan government of masterminding the July 15, 2016 failed coup, although it denies any involvement in the attempt.

In December 2013, Turkey was shaken by the revelation of two corruption investigations, on Dec. 17 and 25, in which the inner circle of then-Prime Minister and current President Recep Tayyip Erdoğan were implicated.

After Erdoğan cast the investigations as a coup attempt to overthrow his government orchestrated by his political enemies, namely the Gülen group, the prosecutors and judges were removed from the case, police were reassigned and the corruption investigations were dropped. Later, the police officers, judges and prosecutors who took part in the investigations were all jailed.