Gunmen attack major Shiite holy site in Iran, killing 15

AP:  Gunmen attacked a major Shiite holy site in Iran on Wednesday, killing at least 15 people and wounding dozens. The attack came as protesters elsewhere in Iran marked a symbolic 40 days since a woman's death in custody ignited the biggest anti-government movement in over a decade.

State TV blamed the attack on “takfiris,” a term that refers to Sunni Muslim extremists who have targeted the country's Shiite majority in the past. The attack appeared to be unrelated to the demonstrations.

The official website of the judiciary said two gunmen were arrested and a third is on the run after the attack on the Shah Cheragh mosque, the second holiest site in Iran. The state-run IRNA news agency reported the death toll and state TV said 40 people were wounded.

An Iranian news website considered to be close to the Supreme National Security Council reported that the attackers were foreign nationals, without elaborating.

The Islamic State group late Wednesday claimed responsibility for the attack on its Amaq news agency. It said an armed IS militant stormed the shrine and opened fire on its visitors. It claimed that some 20 people were killed and dozens more were wounded.

Such attacks are rare in Iran, but last April, an assailant stabbed two clerics to death at the Imam Reza shrine, the country's most revered Shiite site, in the northeast city of Mashhad.

Iranian President Ebrahim Raisi said that whoever led and planned the attack will “receive a regretful and decisive response,” without elaborating. IRNA quoted Raisi as saying, “This evil will definitely not go unanswered.”