The reactions to the 2017 Tehran attacks include the responses by political and religious leaders, media and the general public, both within Iran, where the 2017 Tehran attacks took place, and from other nations and international organizations. Numerous notable establishments around the world also held memorials. Iranian Police had increased patrols in the streets and subway stations of the capital Tehran after the attacks and also increased security proceedings at the Tehran Metro, where was threatened for a third attack by the ISIL.