Debris is seen from a plane crash on the outskirts of Tehran, Iran, Wednesday, Jan. 8, 2019. A Ukrainian aeroplane carrying at least 170 people crashed shortly after takeoff from Tehran’s main airport, killing all onboard, state TV reported. Picture: Mohammad Nasiri/AP

Tehran, Iran – A Ukrainian aeroplane carrying at least 170 people crashed on Wednesday shortly after takeoff from Tehran’s main airport, killing all on board, state TV reported.

The plane had taken off from Imam Khomeini International Airport in the Iranian capital. The crash is suspected to have been caused by mechanical issues, the TV reported, without elaborating.

An investigation team was at the site of the crash in southwestern outskirts of Tehran, civil aviation spokesman Reza Jafarzadeh said.

“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.”

Pir Hossein Kulivand, an Iranian emergency official, later told state TV all those on board were killed in the crash. He said rescuers were trying to collect the dead.