(QHA) -

Ukrainian border guards and customs officers crossed into Russia to inspect the convoy of more than 250 trucks of Russian humanitarian convoy August 15, defense officials in Kiev said in a statement.

Russia says the trucks are carrying water, food, and other aid for people in eastern Ukraine, where Ukrainian forces are fighting pro-Russian separatists, but Western officials have expressed concern it could be a pretext for a military incursion.

Sergei Astakhov, an assistant to the deputy head of Ukraine's border guard service, said the cargo would be inspected in the presence of representatives from the International Committee of the Red Cross.

Dozens of Russian armored personnel carriers (APCs) joined the convoy in the Rostov Oblast, not far from the Ukrainian border, on August 15.