Turkish prosecutors have launched an investigation into a popular television show after a caller criticized military operations against Kurdish rebels, as Turkey continues to crackdown on dissenting voices.

The state-run Anadolu Agency reported Monday that Istanbul prosecutors are investigating Kanal D television producers and the show's presenter, Beyazit Ozturk, for alleged "terrorist propaganda."

On Friday, a teacher from the mainly-Kurdish Diyarbakir city called the show, and urged Turks to speak up against the operations, saying children were being caught in the middle. Ozturk then asked the audience to applaud her words during the live broadcast.

A Turkish human rights group has said up to 162 civilians, including 32 children, have been killed since August in the increased fighting between the security forces and the Kurdish rebels.