Earlier the same day, Artem Zdunov, the head of Mordovia Republic, said that a drone had targeted a facility in the region.

The Russian Defense Ministry claimed that Russian air defenses shot down a Ukrainian drone over Mordovia.

Container over-the-horizon radar, which reportedly came under the attack, is capable of detecting targets at distances up to 3,000 kilometers. It is a part of the air and space attack reconnaissance and warning system, according to the Russian Defense Ministry.

Earlier, Ukraine's Security Service (SBU) hit a Russian modernized Nebo-U long-range radar system in Bryansk Oblast, a source at SBU told the Kyiv Independent on April 16.

Overnight on April 11, two drones were reportedly shot down over Mordovia, some 800 kilometers from the Ukrainian border, for the first time since Russia's full-scale invasion.

In early April, Ukrainian forces struck industrial facilities in Tatarstan's Yelabuga and Nizhnekamsk, a source in Ukraine's military intelligence agency (HUR) told the Kyiv Independent.