In 2014 or 2015 Dutch Public Prosecutor requested Finland to hand over information about the BUK system. Finland used the BUK system in the past. Besides information on how to operate the BUK, Finland also did missile tests on request.
However legal issues prevented the handover of the information.
Finish newspaper Helsingin Sanomat reports on February 3 2017 that Finland finally has handed over all requested information to Dutch prosecutor. Finland also permits the data to be used by the JIT.
Finland delayed the handover of BUK data because some legal concerns. Finland signed a non-disclosure with the manufacturer of the BUK system Almaz-Antey not to reveal secret information.