A Russian military spokesman says Russian forces have seized a large cache of US-made weapons in the western city of Senaki in Georgia. "In Senaki, we seized a large arsenal of weapons including 664 US-made M-16 rifles" and a number of M-40 sniper rifles, General Anatoly Nogovitsyn told a news conference in Moscow.
"There were 1,728 weapons total," he added.
Earlier on Wednesday, US President George W. Bush sent a C-17 airlifter to deliver 'humanitarian supplies' to Georgia.
"And in the days ahead we will use US aircraft as well as naval forces to deliver humanitarian and medical supplies," Bush announced.
Shortly after the announcement, Russia expressed concern that US military cargo planes could be delivering more than just humanitarian aid to Georgia.
"Let us ask the Americans to convince us that the cargo on board these planes is indeed humanitarian aid. Why don't they lift the curtain on what is being delivered?" Deputy Head of Russia's General Staff Anatoly Nogovitsyn said.
Andrei Nesterenko, the Russian Foreign Ministry's spokesman, said that the navy was not 'the best way' to deliver humanitarian aid to Georgia.
The United States is Georgia's principal military supporter, and has provided the country with significant quantities of military aid in recent years.
As the conflict between Russia and Georgia enters its second week, Russia's president Dmitry Medvedev signed a ceasefire deal on Saturday. However, Russian forces have yet to withdraw from Georgia.