Four people were wounded, he added. "In general the situation is quite tense. Yesterday the communities and territories along the border were shelled with different kinds of armament with self-propelled artillery units, mortars, MLRS," Zhyvytskyy said.

Read here Kharkiv: the Kyivsky district was significantly damaged

Shostka, another border town, was shelled with mortars and heavy artillery on Wednesday morning, Zhyvytskyy added.

The portable so-called kamikaze drones carry warheads and detonate on impact. They are small and disposable devices equipped with cameras and GPS that when launched, locate nearby enemy assets and dive on command.