Indonesia's Vice President Gibran Rakabuming Raka has submitted his resignation to the country's upper house of parliament, raising fresh questions about the country's political future amid growing tensions within the government.

Gibran handed in his resignation letter on Thursday following days of speculation about his political future.

Ahmad Muzani, Speaker of the upper house of parliament, confirmed that Gibran had also submitted a resignation letter to President Prabowo Subianto.

Muzani said parliamentary leaders would convene to discuss the matter and determine the next steps following the vice president's decision.

Gibran was elected vice president in 2024 alongside President Prabowo, following a closely watched election that attracted controversy over the circumstances surrounding his candidacy.

His father, former President Joko Widodo, popularly known as Jokowi, faced accusations of interfering in the electoral process after a court ruling changed the eligibility requirements, allowing Gibran to contest the vice presidency despite his age.

Gibran's resignation comes at a time of growing political divisions between Prabowo and his predecessor, Jokowi, whose relationship has become a subject of increasing attention among political observers.

Analysts warn that the widening rift could further destabilise the government, which is already facing criticism over some of its flagship programmes, as well as concerns about its handling of the economy.

The political uncertainty has also raised concerns among investors in Indonesia, Southeast Asia's largest economy.

Investor confidence has weakened as questions emerge over the government's fiscal plans, economic priorities and broader policy direction.

Concerns about the country's economic outlook have also kept the risk of a downgrade in Indonesia's stock market under scrutiny, adding pressure to an administration already navigating political and economic challenges.

Despite the growing tensions, former President Jokowi has publicly maintained his support for Prabowo's administration.

Speaking to journalists outside his residence in Solo, Central Java, Jokowi said he remained committed to supporting the president, particularly initiatives aimed at improving the welfare of ordinary citizens.

"We will continue to support President Prabowo's administration, especially programmes that serve the interests of the broader public," Jokowi said.

His remarks come amid growing uncertainty over the political relationship between the two leaders and the potential implications for the country's leadership.

Gibran's resignation now places the country's political leadership at a critical moment, with parliamentary leaders expected to deliberate on the matter and clarify the way forward.

The developments could have wider implications for Indonesia's political stability, investor confidence and the direction of the current administration.