The detention of a dozen MPs from the pro-Kurdish Peoples' Democratic Party (HDP) including its co-leaders marks the "end of democracy" in Turkey, the party said in a statement Friday.

"The goal of these measures is to shut down the third largest party in parliament. This is a dark day not only for our party but for all of Turkey and the region as it means the end of democracy in Turkey," it said, vowing not to surrender to these "dictatorial policies".