The U.S. military flew B-52 bombers in the vicinity of the South China Sea this week, U.S. officials told Reuters, a move that is likely to cause anger in Beijing amid heightened tensions between the two countries.

Lt. Col. Dave Eastburn, a Pentagon spokesman, said that B-52 bombers transited over the South China Sea as part of "regularly scheduled operations designed to enhance our interoperability with our partners and allies in the region."

Such flights are common, but usually upset Beijing. In June, China's foreign ministry said no military ship or aircraft could scare China away from its resolve to protect its territory after U.S. B-52 bombers flew near disputed islands in the South China Sea.