The Ukrainian Navy reported the information.“Using the reconnaissance assets of the Ukrainian Naval Forces, a radio intercept was obtained about the loss of communication with a Su-30SM aircraft of the Russian troops that was carrying out a mission southeast of Zmiinyi Island. The aircraft likely crashed for unknown reasons,” the statement says.It is noted that the Russians are conducting a search and rescue operation. According to the Navy, aircraft debris was found on the sea surface, while the whereabouts of the pilots are unknown.On the morning of Saturday, June 7, in the Kursk sector, Ukraine’s Defense Forces shot down a Russian Su-35 fighter.