The country's economy grew four percent in the March quarter and is o­n track to reach the official forecast of 4.5 percent this year, the central bank said today.

Growth in all economic sectors boosted gross domestic product (GDP) growth in the first quarter, which was up from 1.3 percent in the same period last year, said Bank Negara governor Zeti Akhtar Aziz said.

"The real (first quarter) GDP was broad-based with continued expansion across all sectors with the main impetus from manufacturing and services sectors," she told a news conference.

"The impact of heightened external uncertainties o­n the economy was largely mitigated by higher commodity prices, improved disposable income, resilient domestic demand and sustained external demand."