According to a statement by Iran’s Intelligence Ministry, the attackers behind the first Islamic State (IS) bombing inside Iran’s borders have been identified. Iranian news agencies shared graphic pictures of the corpses of the attackers and their first names. They withheld the family names. Some Iranian social media users shared the pictures of Seryas Sadeghi, one of the individuals who blew himself up in the attacks. Sadeghi was reportedly active in promoting extremism online.

The attacks on Iran’s parliament and the shrine of the founder of the Islamic Republic, Ayatollah Ruhollah Khomeini, on June 7 left 17 people dead and the capital shocked. According to the statement, the team of five attackers had previously belonged to Sunni extremist groups inside Iran but later joined IS, where they went to fight in Mosul, Iraq, and Raqqa, Syria.

The group had originally belonged to a terrorist cell under the leadership of an individual by the name of Abu Ayesha. In July 2016, Abu Ayesha was killed in a shootout with Iranian authorities. He had traveled into Iran’s western border province of Kermanshah from Iraq along with two cells, according to Iranian authorities. Security officials had found explosives in his hideout and claimed that his group had designated 50 locations inside Tehran for attacks. According to Iranian authorities, the team of five that carried out the attack was able to hide and evade authorities after the raid on Abu Ayesha’s hideout.

Fars News published pictures of Abu Ayesha, whom they referred to as Abu Ayesha Kurdi; an accompanying article claims an Islamic Revolutionary Guard Corps (IRGC) sniper killed him. One of the pictures shows Abu Ayesha standing above three blindfolded individuals in orange jumpsuits on their knees, a common video set up for IS.