Natalia Zinets -
A top Ukrainian security official on Thursday set out what he said were the four main theories for why a Ukrainian airliner crashed in Iran the previous day killing 176 people, including a possible missile strike and terrorism.
Oleksiy Danylov, secretary of Ukraine’s National Security and Defence Council, made his statement as an initial report by Iranian investigators said the plane, a Boeing 737-800, had been on fire immediately before it crashed.
Ukraine is looking at various possible causes of the crash, including a possible missile attack, a collision, an engine explosion or terrorism, he wrote in a Facebook post.
The crash happened hours after Iran launched missile attacks on US-led forces in Iraq, leading some to speculate that the plane may have been hit.
Investigations into airliner crashes are complex, requiring regulators, experts and companies across several international jurisdictions to work together. Issuing an initial report within 24 hours is rare and it can take months to fully determine the cause.
A Canadian security source said there was evidence one of the engines had overheated.
The initial assessment by Western intelligence agencies was that the plane had suffered a technical malfunction and had not been brought down by a missile, five security sources — three Americans, one European and the Canadian — who asked not to be named, said.
Danylov said Ukrainian investigators in Iran wanted to search the crash site for possible debris of a Russian missile after seeing reports about its possible existence on the Internet.
He referred to an unverified image being circulated on Iranian social media purportedly showing the debris of a Russian-made Tor-M1 surface-to-air missile of the kind used by the Iranian military.
“Our (investigative) commission is talking to the Iranian authorities about visiting the crash site and is determined to search for fragments of a Russian Tor air defence missile about which there was information on the Internet,” Danylov separately told Ukrainian news site Censor.net.
He said Ukraine would draw on expertise learnt from carrying out its own investigation into the 2014 shooting down of Malaysia Airlines flight MH-17 over eastern Ukraine, an incident that killed all 298 people on board. — Reuters
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