Three Britons have died after a Ukrainian passenger plane crashed moments after take off from Iran, officials in Kyiv have confirmed.
All 180 people on board the Ukraine International Airlines Boeing 737 flight from Imam Khomeini International Airport in Tehran to Kyiv were killed on Wednesday morning.
Iranian state television said the cause of the crash was mechanical issues.
Ali Kashani, spokesman for Imam Khomeini International Airport, told Fars news agency the plane "crashed around Parand", about 60 kilometres south-west of Tehran.
"It is predicted that technical problems caused the accident," he said.
The aircraft was three years old.
TheUS Federal Aviation Administration had earlier barred commercial flights from entering Iranian and Iraqi airspace, after Iran launched missiles targeting US troops based in Iraq.
In a statement, Mr Zelensky, said: "Terrible news from the Middle East. This morning, after taking off from the Imam Khomeini International Airport (Tehran), a passenger plane of Ukraine International Airlines crashed near the airport.
"According to preliminary data, all passengers and crew members were killed.Our embassy clarifies the information about the circumstances of the tragedy and the lists of casualties.
"My sincere condolences to the families and friends of all passengers and crew members."
The news comes just hours after Iran launched 30 missiles at US bases in Iraq.
Earlier the FAA in the US has said it was issuing flight restrictions that prohibited civil operators flying over airspace in the region.
The crash comes just days before the Boeing's new CEO David Calhoun will officially take over from Dennis Muilenburg, who was pushed out last month after company's disastrous year, reports CNN.
