Dutch officials are leading the probe into what brought down the Malaysia Airlines Boeing 777 over Ukraine and killed 298 people aboard, most of them Dutch, as well as why the flight route had been given the all-clear.
The Dutch safety board in charge of both inquiries asked the Intelligence and Security Services Oversight Committee (CTIVD) to investigate what assessment the domestic intelligence agency (AIVD) and military intelligence service (MIVD) made of flight routes over Ukraine ahead of the July 17 disaster.
The MH17 flight from Amsterdam to Kuala Lumpur was shot down over territory in eastern Ukraine controlled by pro-Russian separatists, who have been fighting Kiev forces since April.
Ukraine and the West accuse Russia of supplying the rebels with a surface-to-air missile launcher, but Russia has said a Ukrainian military jet was responsible for the crash.