There were reports earlier this morning, but the scale was as before this crisis. I.e. not enough to call it casus belli.
From one of the telegram channels:
On Thursday morning, Ukrainian security forces fired four times on the territory of the Lugansk People's Republic, told reporters at the LPR office in the Joint Center for Control and Coordination of the Ceasefire (JCCC).
"The armed formations of Ukraine grossly violated the ceasefire regime, using weapons that, in accordance with the Minsk agreements, must be withdrawn," the mission officer said.
According to him, from 5:30 Moscow time, the Ukrainian military shelled the settlements of Sokolniki, Zolote-5, Veselenkoe and Nizhne Lozovoe controlled by the republic from 120 and 82 mm mortars, grenade launchers and heavy machine guns. Later, it also became known about the attack on the village of Donetsk.
If anything of the scale you've just reported had happened 40 minutes ago, it would be all over telegram by now.
And another one. Different one. Same scale as the one above.
Urgent statement of the official representative of the NM DPR on February 17, 2022
The situation on the line of contact has sharply escalated.
The enemy is attempting to unleash active hostilities. The Ukrainian side continues to violate its obligations to observe the ceasefire. Since the beginning of the current day, Ukrainian militants have violated the ceasefire FOUR times.
In the MARIUPOL direction, the militants of the 36th Marine Brigade were shelling in the direction of the settlement. KOMINTERNOVO and n.p. OCTOBER from grenade launchers of various types and small arms, firing FORTY-TWO shells.
Also, the militants of the 53rd brigade fired at the areas of the settlement with the use of mortars of 120-mm caliber. PETROVSKOE and NOVOLASPA, releasing TWENTY shells.
In order to protect the civilian population, our defenders were forced to return fire to suppress enemy fire weapons.
Information on casualties among the civilian population and damage to civilian infrastructure is being specified.
The facts of violations were promptly brought to the attention of the representatives of the Ukrainian side in the JCCC, in order to take action against the violators and exclude cases of falsification of credentials on violations of the ceasefire regime by Ukrainian militants.
We call on international observers and the OSCE leadership to record another fact of gross violation of the truce by the Ukrainian side, purposefully provoking the resumption of hostilities in Donbas.