a quadripartite joint fact-finding group (jffg) was convened to investigate the incident. the jffg, headed by the un observer mission in georgia, also involved representatives of russian peacekeepers, and both the georgian and abkhaz sides. the interim report was released on april 2, 2007, followed by a supplementary report on june 13. the report was inconclusive, but it confirmed that "helicopters used multiple approaches from the north" to reach the upper kodori gorge. it also ruled out the possibility of georgia's involvement in the incident.