Xinjiang Party Secretary Ma Xingrui attends the Xinjiang delegation meeting during the National People's Congress (NPC) at the Great Hall of the People in Beijing, China 7 March 2025; Credit: REUTERS/Tingshu Wang

BEIJING (Reuters) - China has expelled Ma Xingrui, a former Politburo member, from the ruling Communist Party on corruption charges, making him the third sitting member of the elite decision-making body to be purged since 2025 as President Xi Jinping intensifies his anti-graft campaign.

Ma, who also served as the deputy head of the Central Rural Work Leading Group, was placed under investigation in April 2026 over suspected "serious violation of law and discipline" – the party's euphemism for corruption.

Investigators found that Ma had sought benefits for others in the selection and appointment of officials and improperly arranged jobs for others, Xinhua reported.

He "connived at, failed to detect and failed to rein in serious violations of discipline and law, and suspected criminal conduct, by staff members around him," the report said.

A probe into Guo Yonghang, Ma's chief of staff during his tenure as the top official in the southern technology hub of Shenzhen from 2015 to 2016, was announced in March. Guo had risen through the ranks in the southern province of Guangdong as Ma became governor of the economic powerhouse.

A number of officials in Xinjiang who received promotions after Ma became party chief of the north-western border region in late 2021 have also been investigated in recent months.

He also illegally accepted gifts, helped relatives purchase property at below-market prices and engaged in exchanges involving power and money for sex, according to the report.

Ma allowed his family members to leverage his official influence to obtain huge benefits, engaging in what authorities described as large-scale "family corruption", while illegally accepting huge sums of money and property. Xinhua did not specify the amount involved.

Ma could not be reached for comment.

The expulsion marks the latest escalation in Xi's years-long campaign to root out corruption, which has ensnared senior party, government and military officials.

In January 2026, China opened a corruption investigation into Zhang Youxia, the military's most senior general. He Weidong, a former vice chair of the Central Military Commission, was expelled from the Communist Party in October last year.

Scientist-turned-administrator

Ma, a scientist-turned-administrator, enjoyed a meteoric rise in Chinese officialdom after becoming an executive at China's main spacecraft and missile manufacturer, China Aerospace Science and Technology Corporation, in the 2000s.

He worked for more than a decade in China's state-owned aerospace industry, overseeing some of the country's most important space programmes.

Ma's fall from grace comes amid deepening scrutiny of China's defence and aerospace sectors. In February 2026, prosecutors accused Zhang Jianhua, a former deputy director of the State Administration of Science, Technology and Industry for National Defence, of bribery and abuse of influence. Zhang served as deputy director under Ma, who headed the defence industry regulator in 2013.

Three Chinese lawmakers with ties to the defence, aerospace and nuclear sectors were removed from their positions in the same month.