Five people were killed and 22 others wounded in an attack at the Turkish Aerospace Industries' (TUSAS) headquarters on October 23, the government said, and witnesses said they heard gunfire and a loud explosion at the site near Ankara.
Interior Minister Ali Yerlikaya said two of the attackers were killed in what he called a terrorist attack, adding three of the injured are in critical condition. TV broadcasters earlier showed footage of armed assailants entering the TUSAS building.
Turkish President Tayyip Erdogan, alongside Russia's Vladimir Putin at a BRICS conference in the Russian city of Kazan, also called it a terrorist attack.
Prosecutors have launched an investigation, state-run Anadolu Agency reported.
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