Bank Indonesia stepped into foreign-exchange markets to defend the rupiah after the currency slid to an unprecedented low, marking a fresh test of the central bank's commitment to stabilize the embattled unit. The intervention signals growing concern over capital outflows and dollar strength that have battered Southeast Asian currencies in recent months.

The rupiah's decline reflects broader pressures facing emerging markets as the Federal Reserve maintains higher-for-longer interest rate policies. Investors have been pulling money out of riskier assets, pushing the dollar to multi-year highs against peer currencies across the region. Indonesia, one of Asia's largest economies, has proven particularly vulnerable given its reliance on foreign capital inflows.

Currency weakness threatens to revive inflation in Indonesia, a net importer of energy and food, while increasing the burden of dollar-denominated debt held by corporations and the government. The central bank's direct market intervention aims to prevent further depreciation that could destabilize the broader financial system and erode confidence in Indonesian assets.