A Russian drone strike ​on a ​shopping centre in the northern ​Ukrainian city of Sumy killed two people and injured 20, four of them ‌seriously, ⁠Regional ⁠Governor Oleh Hryhorov said.Hryhorov, writing on ​Telegram, initially said three people had died ​but later corrected the death toll to two.He said a fire ​had broken out, ⁠and photos ‌posted online by the ​governor ​showed a badly damaged ⁠building and rubble strewn on the ​ground.Also read: Iran-backed fighters in Yemen and Iraq are joining forces to threaten Gulf, officials sayFour people were in serious condition, Hryhorov said. Four of the injured were teenagers, the national police said separately on Telegram.Across the wider region, ‌five people were killed and 24 injured, the police ​added.Sumy and ​the ⁠surrounding region along the Russian border have long been subject to heavy attacks ​and Moscow has said it wants to establish a buffer zone in the area.