ISTANBUL, Turkey--The Anatolian Public Prosecutor's Office in Turkey will officially call for a prison sentence of 1 to 3 years for Selahettin Demirtas, the co-leader of the pro-Kurdish People's Democratic Party (HDP), according to Turkish media outlets Friday.

The prosecutors will be charging Demirtas for "publicly inciting hatred and hostility" in a speech prior to the 2015 June elections, daily Hurriyet reports.

It is still unclear if the charges would also include HDP co-leader Figen Yüksekdağ and the other 10 HDP lawmakers who were detained on November 4.

At the center of the charges is the attempted bombing of Star newspaper in Istanbul on July 19 last year which was reportedly thwarted by Turkish security forces and which the prosecutors now link to a speech delivered by Demirtas a month earlier.

The HDP co-leader had criticized the newspaper for its coverage of the election campaigns, a speech which the prosecutors claim provoked public anger at Star newspaper and resulted in the failed bombing.

"The bomb was placed there after Demirtas' speech which indicates his role in the event," the prosecutors stated according to Hurriyet.

Demirtas, 43, was a lawyer in Diyarbakir before becoming a charismatic face for the Kurdish parliamentary struggle in Turkey.

His leftist approach coupled with his public defence of women's and LGBT rights garnered unprecedented support for the HDP not only among his fellow Kurds but also from Turkish leftists who widely backed him in his 2014 presidential race. A year later the HDP secured 15 percent of the votes in the inconclusive general elections.

Turkey’s parliament approved a bill in May this year to amend the constitution and strip MPs of immunity from prosecution, a move that paved the way for the trials of HDP legislators.

World bodies including the UN and rights groups have raised concern over the detention of the Kurdish MPs and called for their release.

"The detention of 12 deputies from the Kurdish-rooted leftist Peoples’ Democracy Party (HDP) marks the latest escalation in the onslaught on dissent amid Turkey’s state of emergency," Amnesty International said earlier this month condemning the arrests.