Several people were killed in a suspected terrorist attack at the Turkish Aerospace Industries’ headquarters near the country’s capital, according to Turkish authorities.

Turkey continued its strikes in Syria and Iraq for a second day following the terrorist attack on a defense company in Ankara, in what Turkey said were targeted hits on PKK terrorist locations.

A large explosion in Ankara sent smoke billowing over the headquarters of one of Turkey’s most important arms companies. CCTV footage showed a man and a woman wielding automatic weapons as they opened fire on staff trying to flee. Ali Yerlikaya, Turkey’s interior minister, confirmed the pair were “neutralised.”