China successfully flight tested its new high-speed maneuvering warhead last week, days after Russia carried out its own hypersonic glider test, according to Pentagon officials.

The test of the developmental DF-ZF hypersonic glide vehicle was monitored after launch Friday atop a ballistic missile fired from the Wuzhai missile launch center in central China, said officials familiar with reports of the test.

The maneuvering glider, traveling at several thousand miles per hour, was tracked by satellites as it flew west along the edge of the atmosphere to an impact area in the western part of the country.

It was the seventh successful flight test of the revolutionary glider, which travels at speeds between 4,000 and 7,000 miles per hour.

U.S. intelligence officials have assessed that China plans to use the glider to deliver nuclear weapons through increasingly sophisticated missile defenses. The DF-ZF also could be used as part of a conventional strategic strike weapon capable of hitting targets around the world within an hour.

Pentagon spokesman Cmdr. Bill Urban declined to comment on the latest DF-ZF flight test. "But we do monitor Chinese military modernization carefully," Urban said.

Rep. Randy Forbes (R., Va.), chairman of the House Armed Services subcommittee on seapower, said China's hypersonic missile tests are a concern.

"China's repeated test of a hypersonic glide vehicle demonstrates Beijing is committed to upending both the conventional military and nuclear balance, with grave implications for the stability of Asia," Forbes told the Washington Free Beacon.

Adm. Cecil Haney, commander of the U.S. Strategic Command, said Jan. 22 that the new hypersonic glide vehicle is among an array of high-technology missiles and weapons, both nuclear and conventional, being developed and deployed by Beijing.

China "recently conducted its sixth successful test of a hypersonic glide vehicle, and as we saw in September last year, is parading missiles clearly displaying their modernization and capability advancements," Haney said.

China has kept details about the DF-ZF program secret. In March 2015, a Defense Ministry spokesman confirmed one of the hypersonic missile tests after the test was reported in the Free Beacon. The spokesman said the missile test was not aimed at any country and was done for scientific research.

Earlier DF-ZF tests were carried out Nov. 23, Aug. 19, June 7, and on Jan. 9, 2014, Aug. 7, 2014, and Dec. 2, 2014. During at least one test, the maneuvering glider conducted what a defense official said were "extreme maneuvers" at speeds between Mach 5 and Mach 10.

All the tests were first disclosed by the Free Beacon.

Extensive testing and reported successes are indications the new weapon is nearing initial operating capability, although deployment may be years away.