[BANGKOK] Most Southeast Asian stock markets gained on Tuesday, with the Thai benchmark index closing near the 1,600 level a day before the Bank of Thailand's interest rate decision, while Indonesian shares rose ahead of corporate quarterly results.

Asian share markets were mostly firmer on Tuesday and the euro clung to rare gains, relieved that European equities had weathered Greece's election outcome without too much disruption.

The Thai SET index rose 0.09 per cent to 1,589.81.

Shares of large cap firms traded mixed, with carrier Thai Airways International's stock climbing 3.4 per cent after a restructuring plan, while low free float stock, Bank of Ayudhya, slid 7.4 per cent.

Investors in the region are also closely watching the US Federal Reserve's two-day monetary policy meeting, which is starting later in the day.

Jakarta's composite index rose 0.3 per cent as the rupiah led gains among emerging Asian currencies ahead of the Fed meeting.

Among the bright spots, shares of Bank Negara Indonesia climbed 1.6 per cent with the company's quarterly financial results expected later in the week.

REUTERS