The radio's report quoted chief investigator Ahmad Majidi as saying one of the two recovered boxes was damaged. It said the boxes -- the plane's cockpit voice and flight data recorders -- would likely be sent to the aircraft's Russian manufacturers for analysis.The search for the third black box was continuing, Majidi said.
Bodies of the victims would be taken to Tehran later Thursday for identification, he added. Most of the passengers were Iranians, many of them from Iran's large ethnic Armenian community, as well as 11 members of Iran's national youth judo team. Five Armenian citizens were among the dead, Armenia's Foreign Ministry said in a statement, along with two Georgians, including a staffer from the Caucasus nation's embassy in Yerevan.
Armenia on Thursday announced a one-day national state of mourning to mark the death of its citizens in the crash, according to the Russian news agency ITAR-Tass.
Reporting from Yerevan, the agency said flags would fly at half-mast on government buildings and Armenian embassies abroad. Local radio and TV have canceled entertainment programs in a show of respect, it said.
The crash was the latest in a string of air disasters in recent years that have highlighted Iran's difficulties in maintaining its aging fleet of planes.