PHOTO: Leaders of Turkey’s HDP, Selahattin Demirtaş and Figen Yüksekdağ

UPDATE 1130 GMT: At least eight people have been killed and more than 100 wounded in an attack, reportedly by the Turkish Kurdish insurgency PKK, in Diyarbakır Province in southeast Turkey.

The explosion hit an auxiliary building of the police department in the Bağlar district of Diyarbakır about 8 am. The Governor’s office said a car bomb is suspected.

Prime Minister Binali Yıldırım said two police officers and five civilians were killed as well as a PKK militant.

A crowd responded by stoning the headquarters of the opposition Peoples’ Democratic Party (HDP):

Meanwhile, two more HDP deputies have been arrested by Turkish authorities, bringing the total to a dozen this morning.

ORIGINAL ENTRY: Turkey’s security forces have detained the co-chairs and 10 other MPs of the opposition Peoples’ Democratic Party (HDP), claiming that they are refusing to testify in terrorism investigations.

Co-chairs Selahattin Demirtaş and Figen Yüksekdağ were held early Friday. Demirtaş tweeted from his home in Diyarbakır Province in southeast Turkey:

The arrest of Yüksekdağ:

The HDP supports Kurdish autonomy within Turkey and has called for expanded rights for groups including women, gays, and lesbians. It surged into Parliament in June 2015 with more than 13% of the vote.

Daily Sabah, a newspaper close to President Recep Tayyip Erdoğan, framed the arrests as a necessary response to the Turkish Kurdish insurgency PKK, which has fought Turkish forces for more than 30 years: “Pro-PKK HDP Co-Chairs Demirtaş, Yüksekdağ Detained for Refusing to Testify”.

The leader of the main opposition Republican People’s Party (CHP) said the arrests are sending Turkey “in a dangerous direction”. Other CHP MPs said the Government’s move was “not only a coup, but also a mission to divide the country”.

Referring to the attacks of the failed attempt to overthrow Erdoğan on July 15, the MPs said, “The Grand Parliament has been bombed once again.”