Myanmar's junta chief said Sunday that elections would be held and a state of emergency lifted by August 2023, extending the military's initial timeline given when it deposed Aung San Suu Kyi six months ago.

In a televised address junta leader Min Aung Hlaing said "we will accomplish the provisions of the state of emergency by August 2023."

"I pledge to hold multiparty elections without fail," he added.

The general's announcement would place Myanmar in the military's grip for nearly two and a half years – breaking his earlier promise of a one-year timeline announced days after the 1 February coup.

The army has justified its power grab by alleging massive fraud during 2020 elections won by Aung San Suu Kyi's National League for Democracy in a landslide, and has threatened to dissolve the party.

Last week it cancelled the results of the polls, announcing it had uncovered over 11 million instances of voter fraud.

Aung San Suu Kyi has been detained since February 1 and faces an eclectic raft of charges - from flouting coronavirus restrictions to illegally importing walkie-talkies - which could see her jailed for more than a decade. The charges and the junta moves concerning the NLD appear aimed at ousting The Lady and the popular NLD from politics.

As Min Aung Hlaing made his announcement, small groups of demonstrators marched in protest against the junta.

Protesters in the northern town of Kale held banners reading "strength for the revolution" while demonstrators let off flares at a march in the commercial capital Yangon.

Tens of thousands of civil servants and other workers have either been sacked for joining rallies or are still on strike in support of a nationwide civil disobedience campaign.

The NLD saw their support increase in the 2020 vote compared to the previous election in 2015.

In a report on the 2020 polls, the Asian Network for Free Elections monitoring group said the elections were "by and large, representative of the will of the people".