This is yesterday's news, not breaking news, and there's already a thread about it in the ME section.
Nevertheless; This is not the UN investigation, this is the UNHRC investigation. The UN investigation is still going on.
The UNHRC is an anti-Israeli body that was pretty much formed for anti-Israeli decisions and operates under the mask of a "human rights" organization.
It has dealt with Israel-surrounding issues more than it did with every other country upon earth, combined.
This bias was also pointed out by Kofi Anan, Ban ki-Moon, the EU, the USA, Canada and Israel, and no one in the sane world even gives a damn about what those folks have to say.
This is also the same organization behind the infamous Goldstone report.
As to the report itself, it is even more ridiculously biased than the body itself, and since Israel did not cooperate with the organization's investigation, it did not have any access to any evidence on the incident and was basing its claims entirely on witnesses' 'testimonies', the words of the same people that can be seen lynching soldiers with knives and iron bars in the video.
Fortunately it is a toothless organization so it can be easily ignored.