Turkey's authorities are investigating more than 180 legal inquiries into allegations involving illegal eavesdropping and the unauthorized access and examination of personal information, local station NTV reported Thursday.

Some 150 officers were deposed over administrative inquiry about these allegations, the minister told reporters. The minister said authorities are launching the inquiries in every province of Turkey "wherever needed," according to NTV.

A graft probe that began last December has shaken the government, and led to resignation of three ministers whose sons are allegedly involved in corruption and bribery.

The operation revealed a bitter feud between Turkish Prime Minister Recep Tayyip Erdogan's government and influential US- based Muslim cleric Fetullah Gulen, who wields influence over police and judiciary.

Released shortly after the probe, a leaked audio recording revealed an alleged conversation between Erdogan and his son Bilal, in which the prime minister ordered his son to dispose of vast amounts of cash just after a graft probe.

Erdogan denied the authenticity of the recording, saying that the tapes were fabricated and were "immoral product of montage and completely false."

Several other Turkish officials and businessmen have been allegedly recorded in conversations involving corruption and bribery charges, which are shaking the faith of many Turks in their leaders and garnering national media publicity.