DUBAI, United Arab Emirates (AP) — Iran has released security footage that it said came from its notorious Evin Prison the night a fire broke out that killed at least eight inmates. The footage shared on Sunday represents the government’s effort to clarify the its narrative amid growing international pressure. But the quick glimpses only added to the mystery. Also on Sunday, Iran’s civilian nuclear arm acknowledged a cyberattack. The events come as Iran faces sustained nationwide unrest first sparked by the Sept. 16 death of Mahsa Amini, a 22-year-old woman in police custody. On Sunday, Iran’s leading teachers’ association reported that sit-ins canceled classes at multiple schools across the country in protest over the government’s crackdown on student protesters.