"Theoretically speaking, this is not the function of the organization. However, the fact that it was involved and has come to objective conclusions I believe is important. We will try to proceed with the practice further," Andrei Kelin told Rossiya-24 TV channel.
The OSCE Special Monitoring Mission (SMM) in Ukraine released on Saturday its conclusions into Tuesday's bus attack that killed 12 people near a Ukrainian military checkpoint in the eastern Donetsk Region.
Commenting on the results of the report, Russian Ambassador to the OSCE Andrei Kelin said they contradicted Kiev's claims that the bus had been hit by local militia from the east.
Kiev had previously claimed that the bus had been hit by rockets fired from the east, the direction of a town where local independence fighters had allegedly been present at the time. DPR authorities stressed they had not been involved in the attack.
Despite the ceasefire agreement reached by the warring sides in September 2014, reports of violations continue to emerge in eastern Ukraine.