KYIV: A rare Russian attack on a Ukrainian warship killed two servicemen and others are unaccounted for, a spokesperson for Ukraine’s navy told AFP on Friday.

Russia said a day earlier it had sunk a Ukrainian reconnaissance ship, the Simferopol, in the Danube River delta in one of its first successful hits with a naval drone.

Ukraine’s admission that a ship was hit is rare, as both Moscow and Kyiv are reluctant to disclose military losses.

SUNK: Ukrainian Recon Ship WIPED OUT By Unmanned Boats At The Mouth Of The Danube

The drone-like boats had been used during July Storm exercises. Ukrainian Armed Forces have acknowledged the loss of the Simferopol vessel.