We kind of know what happened:
>Ukrainians all stand right next to an abandoned Russian tank
>out in the open in the middle of the road
>Ukrainian tank comes from down the road
>sees them and thinks they are Russian
>shoots and blows them up
They filmed the corpses after that and the channel said it was friendly fire. Which is ridiculous because they were clearly wearing Ukrainian camo, had blue armbands and Ukrainian flags all over them

I saw them filming the aftermath and boy, it was brutal as hell. They were blown aparts, limbs splattered everywhere, one guy had his entire head missing. I would link it here, but I think it's against the rules

Still incredible what a fuck up it was

Russian media is going to have a field day with this one.