There is proof that the Russkies have not only been shelling, but shooting GRADS and moving weapons across the border, and all of this predating the Russkie claim of "Ukrainians shelling" their side of the border. BTW, they, like you, are pathological liars, and are not to be believed even if they tell you what day of the week it is.
You quote unconfirmed information put out by the Kiev government. You have no creditability. I think the Russians called BS on that also.