A huge cloud of smoke could be seen rising into the air on Saturday after an explosion in the southeastern Ukrainian city of Avdiivka, which houses a chemical plant, the Russian news agency RIA quoted one of its reporters as saying.
Avdiivka, currently held by Ukrainian forces, lies just to the north of the city of Donetsk, which is controlled by Russian-speaking separatists.
RIA posted video it said had been taken from Donetsk which showed a large smoke cloud rising from Avdiivka.
