The party of Myanmar's Aung San Suu Kyi has instructed its lawmakers not to leave the capital, rank-and-file members said, fueling speculation of a legal bid to sidestep a clause in the constitution barring the democracy champion from the presidency.

Eight new lawmakers from the National League for Democracy (NLD) said the party's top governing body, the 15-strong Central Executive Committee (CEC), had told them to stay in Naypyitaw, where the NLD-dominated parliament began its five-year term this week.

"We are not allowed to take any leave until the end of next week," said a new NLD member who did not want to be identified. "One of the NLD CEC members said there may be some important matters or emergency bills coming up next week."