Chinese jets intercept US Navy plane over East China Sea
Two Chinese fighter jets intercepted a United States Navy surveillance plane over the East China Sea at the weekend, prompting evasive action by the former's pilot to avoid a collision, the Pentagon has said.
The officials, speaking on condition of anonymity, said initial reports showed one of the Chinese J-10 aircraft came close enough to the United States EP-3 plane on Sunday to cause the American aircraft to change direction.
One of the officials said the Chinese jet was armed and that the interception happened 80 nautical miles (148 km) from the Chinese city of Qingdao.
The Pentagon said that the encounter between the aircraft was unsafe, but added that the vast majority of interactions were safe.
Incidents such as Sunday's intercept are relatively common.
In May, two Chinese SU-30 aircraft intercepted a United States aircraft designed to detect radiation while it was flying in international air space over the East China Sea.
In 2001, an intercept of an American spy plane by a Chinese fighter jet resulted in a collision that killed the Chinese pilot and forced the American plane to make an emergency landing at a base on Hainan.
The 24 United States air crew members were held for 11 days until Washington apologised for the incident. That encounter soured United States-Chinese relations in the early days of President George W Bush's first term in office.
Separately, the Pentagon said the American military would soon carry out another test of it's Terminal High Altitude Area Defense (THAAD) system.
"These tests are done as a routine measure to ensure that the system is ready and... they are scheduled well in advance of any other real world geopolitical events going on," Pentagon spokesman Captain Jeff Davis told reporters.
The director of the Missile Defense Agency, Lieutenant-General Sam Greaves, said in a statement that a test would be carried out at the Pacific Spaceport Complex in Alaska.
In June, the United States shot down a simulated, incoming intermediate-range ballistic missile similar to the ones being developed by countries like North Korea, in a test of the nation's THAAD missile defences.
China closely monitors any United States military activity around its coastline.