Ukrainian border guards have begun checks on a convoy of Russian trucks carrying aid supplies to the east of the country, the border guards service said.
Spokesman Andriy Demchenko told Reuters: "I can confirm that the Ukrainian side began border-customs formalities relating to the Russian humanitarian cargo."
But he said that at this point the cargo was still in Russian territory.
More top news
Hospital chiefs asked by NHS regulator to fill vacancies only where "essential" as they face an unprecedented financial challenge.
The footballer and father-of-two said he is 'filled with pride' at being asked to take on the role.
A state of emergency has been declared as emergency crews struggle to overcome raging wildfires that have been burning for six days.