From CNN’s Zahra Ullah in Moscow
Ukraine International Airlines released a statement Wednesday confirming that its flight PS752, operating to Kiev, disappeared from radars a few minutes after its departure from the Iranian capital.
The flight departed Tehran International Airport at 6:10 a.m., the statement said.
It added that the plane was a Boeing 737-800 NG aircraft, registration UR-PSR, and "was built in 2016 and delivered directly to the airline from the manufacturer."
The airline has suspended all its flights to Tehran until further notice.
Ukraine International Airlines expressed its deepest condolences to the families of the victims of the crash and will do everything possible to support them, the statement said.
The airline added that it is currently clarifying the exact number of passengers on board after preliminary data said there were 167 passengers and nine crew members on board.
From CNN's Lindsay Isaac and Mary Ilyushina
The victims of Wednesday's plane crash in Iran include 82 Iranians, 63 Canadians, 11 Ukrainians, 10 Swedes, four Afghans, three Germans and three British nationals, Ukrainian Foreign Minister Vadym Prystaiko tweeted.
A spokesperson for Ukrainian Airlines told a press conference that the plane was last checked on January 6 and there have been no complaints previously in relation to the jet.
International reaction to the Ukrainian Airlines plane crash in Iran is flooding in.
Turkish Foreign Minister Mevlut Cavusoglu spoke to his Ukrainian counterpart, Vadym Prystaiko, on Wednesday.
Cavusoglu offered his condolences "about the Ukrainian plane that crashed,” Turkey's Ministry of Foreign Affairs wrote in a statement.
Iran’s Civil Aviation Authority has set up a team to investigate the crash of flight PS752 from Tehran to the Ukrainian capital Kiev, it said in a statement on Wednesday.
It added that an investigation is under way and data is already being collected.
From CNN’s Mary Ilyushina in Moscowsonos sonos One (Gen 2) - Voice Controlled Smart Speaker with Amazon Alexa Built-in - Black read more
The Ukrainian Embassy in Tehran has ruled out a terror attack as a possible cause for the plane crash, instead saying in a statement that preliminary information suggests engine failure was responsible.
“According to preliminary information, the plane crashed due to an engine malfunction. The version of the terrorist attack or rocket attack is currently excluded,” the statement on its website read.
The plane crash that killed 176 people outside Tehran earlier today is just the latest in a series of deadly aviation incidents that have taken place in Iran. These include:
Ukrainian President Volodymyr Zelensky will break off his trip to Oman to return to Kiev to deal with the plane crash, according to his official Twitter account.
An earlier statement on his official Facebook page said Zelensky traveled to Oman at his own expense with his family.
Photos from the scene of the crash, located just outside the Iranian capital Tehran, show mangled metal and loose debris from the plane wreck.
The plane caught fire after it crashed earlier on Wednesday morning, preventing emergency personnel from accessing it immediately.
Most of the flames appear to be out now, revealing the extent of the damage. The entire tail section of the aircraft has broken off, and structures from the plane look burned.
The crash killed 176 people, including passengers and crew.
Iranian and Ukrainian officials are now working together to respond to the disaster.
"We are working to establish the causes of the tragedy, the Ukrainian consul is working on site, an operational crisis group has been created. We are currently clarifying the number of Ukrainian citizens on board," said Ukrainian Prime Minister Oleksiy Honcharuk in a statement.
Footage captured by Iran state-run news agency IRNA shows the fiery aftermath of the plane crash just outside Tehran early Wednesday.
In the video, the sky is still dark. The ground is covered with small spot fires from debris.
There were 176 people on board in total, according to state news agency Press TV -- 167 passengers and nine crew members. All of them