Turkey detains two left-wing militants trying to enter parliament
Fahrettin Altun, the presidential communications director, said in a tweet that the suspects were identified as members of the banned Revolutionary People's Liberation Party-Front, also known as DHKP-C.
He called their attempt a "terrorist act against the will and the peace of the nation" and said "they will pay the price".
The state-run Anadolu Agency said the suspects - a woman and a man - arrived at the parliament building on Tuesday and tried to take a security official hostage before they were subdued.
The suspects were carrying sharp objects and an item that was made to look like a bomb, Anadolu reported.
There are reports that the pair were invited to parliament by Mahmut Tanal, Istanbul Deputy of the Republican Party (CHP).
The DHKP-C is considered a terror organization by Turkey, the US and the European Union.
The group is responsible for a string of assassinations and bombings in Turkey, including a 2013 suicide bomb attack on the US Embassy in Ankara.
Altun said their "internal and external connections will be revealed and accounted for."
Follow us on Twitter: @The_NewArab