Yeysk

Russian media carried a video of the plane falling into the sea just off a crowded beach on the Yeysk Spit.

Yeysk lies across the Sea of Azov from the Russian-controlled part of Ukraine's Donetsk region.

It's not the first such incident - last October a Sukhoi fighter-jet - again, an Su-34 - crashed in the Russian city of Yeysk killing at least 13 people.

In October, a Russian warplane crashed next to a residential building in the port city of Yeysk on the Sea of Azov, killing 15 people.

Yeysk hosts a big Russian air base with warplanes that fly missions over Ukraine.