Two attackers killed five people and wounded 22 others on Wednesday in what Ankara called a terrorist attack at the Turkish Aerospace Industries headquarters, where witnesses said they heard gunfire and an explosion.

A series of explosions and gunshots were heard at TUSAS, an engine manufacturer for the Turkish defense industry.

Turkey's defense ministry reports airstrikes on Kurdish militant targets in Iraq and Syria following an attack on the defense firm TUSAS. The attack, attributed to suspected PKK militants, resulted in multiple casualties.