A Ukraine International Airlines flight crashed on Wednesday shortly after take-off from Imam Khomeini airport, Tehran's main international airport, killing all 176 on board, Iran's state television has said.
Ukraine's Foreign Ministry confirmed there were no survivors.
Iranian news agency Fars reported that the Boeing 737-800 crash was suspected to have been caused by technical issues, as did Iran's official news agency IRNA.
Iran's civil aviation spokesperson Reza Jafarzadeh said that an investigation team was present at the site of the crash close to the airport in the southwestern peripheries of Tehran, the Associated Press reported.
"After taking off from Imam Khomeini international airport it crashed between Parand and Shahriar," Jafarzadeh said. "An investigation team from the national aviation department was dispatched to the location after the news was announced".