Vietnamese President Nguyen Xuan Phuc has resigned after the ruling Communist Party blamed him for "violations and wrongdoing" by officials under his control, the government said on Tuesday, in a major escalation of the country's anti-graft campaign.

Phuc, a former prime minister widely credited with accelerating pro-business reforms, held the largely ceremonial post of president since 2021 and is the highest-ranking official targeted by the party's sweeping corruption crackdown.

Vietnam has no paramount ruler and is officially led by four "pillars": the party's secretary, the president, prime minister and speaker of the house.