Ukraine’s SBU security service said on Saturday at least 20 civilians were killed in the Russian shelling of a civilian convoy in late September in an eastern “gray zone” between Russian-controlled and Ukrainian-controlled territory.

Seven vehicles were hit in shelling between occupied Svatove in Luhansk region and Ukrainian-held Kupiansk which Kyiv recaptured in the Kharkiv region last month, the SBU said in a statement.