Ukraine President Volodymyr Zelenskiy said there were no survivors.
✈️ — UPDATE: First footage of moment the Boeing 737 Ukrainian Airlines plane crashes with 180 passengers in the Iranian capital, Tehran — No word on casualties or confirmed reason for the crash.Plane crashed moments after takeoff pic.twitter.com/VTnEXmesTK— ®️BELAAZ (@TheBelaaz) January 8, 2020
"My sincere condolences to the relatives and friends of all passengers and crew," Zelenskiy said in a statement, adding that Ukraine was seeking to establish the circumstances of the crash and the death toll.
Iranian state TV and Ukraine's prime minister said 167 passengers and 9 crew were on board.
There was no official word from Ukraine International Airlines.
"The fire is so heavy that we cannot (do) any rescue... we have 22 ambulances, four bus ambulances and a helicopter at the site," Pirhossein Koulivand, head of Iran's emergency services, told Iranian state television.
Television footage showed debris and smoldering engine parts strewn across a field, and rescue workers with face masks retrieving bodies of the victims.
According to air tracking service FlightRadar24, the plane that crashed was Flight PS 752 and was flying to Kiev. The plane was three years old and was a Boeing 737-NG, it said.