What scares me is that everyone is speculating and jumping to conclusions without hard facts. Behaving this way can easily escalate some trivial situation into something more serious.
It's a bit of a waste of a sophisticated rocket, and the warhead is smaller, but the ones they fire tend to be reaching EOL anyway due to age. That, or lack of better alternatives.
So could still be Russian.
Stanisław Jerzy Lec said that it's shameful to suspect when you're certain. Russia has a well established reputation, so while investigation is needed, we can safely assume it's Russian rockets. We of course will be surprised if it happen to be false, but before that it should be logical to follow most likely explanation.
But there is no certainty here, just speculation.
"we can safely assume it's Russian rockets"
It's dangerous to assume anything when it could lead to WW3.
I honestly don't know ho to defend myself about that? Being ignorant to news is probably not good idea. But finding relevant information nowadays require significant amount of time. That is luxury that most people cannot effort so I guess majority easily jump to any kind of trends.
According to [1], Pentagon spokesperson Patrick Ryder said "we don't have any information at this time to corroborate those [press] reports"
[1] - https://www.dw.com/en/nato-investigating-reports-of-russian-...