Turkish security authorities have taken into custody 10 police officers Friday, including two intelligence officials, suspected of involvement in illegal wiretapping and spying on high-ranking officials.

Turkish security authorities have taken into custody 10 police officers Friday, including two intelligence officials, suspected of involvement in illegal wiretapping and spying on high-ranking officials.

According to Sivas Province's Anti-Smuggling and Organized Crime Department, the 10 police officials were all charged as part of a massive probe into illegal wiretapping.

The Sivas prosecution office had demanded that 35 suspects in 18 Turkish provinces were taken into custody on charges of "illegal wiretapping and espionage" as part of an ongoing "parallel state ideas" operation.

Authorities have launched such operations before against what the government calls the "parallel state," a movement allegedly led by U.S.-based preacher Fethullah Gulen and his supporters.