OSCE international observers on Wednesday again failed to access the crash site of the Malaysian Boeing passenger plane in Donetsk region.
Two OSCE cars accompanied by militants were trying to find a safe road leading to the crash site, but they were stopped at a roadblock of terrorists, the BBC reported.
Safety concerns and hindrance from the separatists who control the area have kept the investigation team away. Foreign governments whose citizens died have complained the site is not secured and some human remains have not been recovered.
Government security spokesman Andriy Lysenko added to those concerns Wednesday by saying separatists "have mined the approaches to this area. This makes the work of the international experts impossible."