Reuters: US intelligence confirms Islamic State's Afghanistan branch behind Iran blasts

Communications intercepts collected by the United States confirmed that Islamic State’s (ISIS) Afghanistan-based branch carried out twin bombings in Iran that killed nearly 100 people, two sources familiar with the intelligence told Reuters on January 5.

"The intelligence is clear-cut and indisputable," one source said, Reuters reports.

That source and a second, both of whom requested anonymity to discuss the sensitive issue, said the intelligence comprised communications intercepts, without providing further details. The collection of the intercepts has not been previously reported.

Communications intercepts collected by the United States confirmed that Islamic State’s (ISIS) Afghanistan-based branch carried out twin bombings in Iran that killed nearly 100 people, two sources familiar with the intelligence told Reuters on Friday.

"The intelligence is clear-cut and indisputable," one source said.

That source and a second, both of whom requested anonymity to discuss the sensitive issue, said the intelligence comprised communications intercepts, without providing further details. The collection of the intercepts has not been previously reported.

The Sunni Muslim militant group, however, did not specify that its Afghanistan-based affiliate, known as ISIS-Khorasan (ISIS-K), was responsible for the bombings in the southeastern Iranian city of Kerman.

“The U.S. has pretty clear intel” that ISIS-K conducted the attack, the first source said.

The Central Intelligence Agency declined to comment.

ISIS harbors a virulent hatred for Shi'ites -- Iran's dominant sect and targets of its affiliate's attacks in Afghanistan -- who it views as apostates.

ISIS claimed responsibility for a 2022 attack on a Shi'ite shrine in Iran that killed 15 people and 2017 bombings that hit the parliament and the tomb of the Islamic Republic's founder, Ayatollah Ruhollah Khomeini.

Iran on January 5 said security forces had arrested 11 people suspected of involvement in the January 3rd attack and had seized explosive devices and vests.

While Taliban crackdowns have weakened ISIS-K and prompted some members to leave Afghanistan for neighboring countries, the affiliate has continued focusing on plotting foreign operations, U.S. officials say.