Footage coming from inside city limits of Mariupol, shows Russian tanks and Chechen fighters engaging in what appears to be a close-quarters battle with Ukrainian Armed Forces.

Although this doesn't appear to be conventional CQB fighting, the term "close-quarters battle" can be relative to different scenarios. With these tanks being embedded deep into the city, they have no choice but to engage in tight, narrow corridors, aka "CQB".

At this time, no additional information has been provided. If anything else surfaces surrounding this video, we will be sure to update you in a timely manner.