BEIJING — A senior Chinese general who won the national spotlight by overseeing a grand military parade and who vowed unwavering support for President Xi Jinping’s drive against corruption has come under investigation for graft, the latest in a string of People’s Liberation Army commanders to fall.

Gen. Fang Fenghui disappeared from public view nearly five months ago and quietly retired from his posts, igniting rumors that he was under investigation. Xinhua, China’s official news agency, confirmed on Tuesday that military prosecutors were investigating him on charges of giving and taking bribes.

The brief announcement gave no other details. But the charges that he had given, as well as taken, kickbacks raised the possibility that he may have paid his way up the ranks, some Chinese news media said. Mr. Xi has warned that such corruption threatens to shake Communist Party rule by eroding the loyalty and preparedness of the armed forces.

“In fact, as early as 2003, he was already a senior military officer at military region deputy level,” said a party commentary widely republished by the Chinese news media. “The target of his bribes must be shocking.”