A motion has been filed against pro-Kurdish Peoples’ Democratic Party’s (HDP) 19 deputies for disseminating propaganda on behalf of the outlawed Kurdistan Workers’ Party (PKK).

According to media on Monday, Ankara Public Prosecutor’s Office submitted the motion to the Justice Ministry demanding to lift parliamentary immunity for the implicated HDP lawmakers.

The ministry is expected to open the motion to vote at the parliament.

The motion was reportedly launched in reaction to the HDP deputies’ marching slogans in favor of the imprisoned PKK leader Abdullah Ocalan.

Turkish government has stepped up political pressure on Kurdish minority in recent months, seizing Kurdish-run municipalities and arresting their mayors. Dozens of trustees have been appointed by the Interior Ministry to mostly pro-Kurdish municipalities in Turkey’s Southeast, replacing the elected mayors and municipal council members. Pro-Kurdish Peoples Democratic Party’s (HDP) co-leader and former presidential candidate Selahattin Demirtas has been also behind bars for some time.