Satellite photos analyzed Monday by the Associated Press showed a fire that burned through part of Iran's notorious Evin Prison had damaged one of the largest buildings at the complex, as Iranian officials acknowledged that at least eight people were killed in the blaze. The satellite photos, taken on Sunday by Planet Labs PBC, showed the roof of a large building in the northern section of the prison burning away. The prison holds thousands of people convicted by Iran's opaque court system on charges ranging from theft to murder, but it also holds many political prisoners, including two U.S. citizens. CBS News learned that both of the Iranian-Americans held in Evin prison were safe as of Sunday, but one of them, Emad Sharghi, was moved to solitary confinement. Sharghi is nearly halfway through serving a 10-year sentence he was given on espionage charges. His family and the U.S. government say he's being held by Iran's authoritarian regime as a political hostage, and his family called o