The death toll from a drone strike on ​a student dorm in the ‌Russian-controlled Luhansk region of eastern Ukraine has risen to 10 ​from six, a Russian-installed ​official said on Saturday.

Russia on Friday accused ⁠Ukraine of what it ​described as a deliberate drone ​strike in the town of Starobilsk, with Russian President Vladimir Putin on ​Friday ordering his military ​to prepare options for retaliation.

Leonid Pasechnik, ‌head ⁠of the Russian-installed administration in the region, said that 10 people had been killed, ​48 were ​injured ⁠and 11 were still unaccounted for.

Ukraine’s military denied the ​Russian accusations and said ​it ⁠had struck an elite drone command unit in the ⁠area. ​It said that ​Kyiv complied with international humanitarian law.