Ms Suu Kyi has been on trial for 11 separate cases that carry a combined maximum sentence of more than 100 years in prison.

Last month she was handed a four-year sentence for incitement and breaching COVID-19 rules, which was then reduced to two years on humanitarian grounds.

The Nobel laureate's supporters say all the charges are trumped up and designed to remove her from politics.

What led to the former icon of Myanmar's pro-democracy movement being charged?

Her trial is being held behind closed doors.

Monday's verdict in the court in the capital, Naypyidaw, was conveyed by a legal official — who insisted on anonymity for fear of being punished by the authorities, who have restricted the release of information about Ms Suu Kyi's trials.

He said she was sentenced to two years in prison under the Export-Import Law for importing the walkie-talkies and one year under the Telecommunications Law for possessing them.

The sentences are to be served concurrently.

She also received a two-year sentence under the Natural Disaster Management Law for allegedly violating coronavirus rules while campaigning.

Human Rights Watch's deputy Asia director Phil Robertson called the latest ruling concerning the walkie-talkies "The most ludicrous charge of all".

"The Myanmar junta's courtroom circus of secret proceedings on bogus charges is all about steadily piling up more convictions against Aung San Suu Kyi so that she will remain in prison indefinitely," he said.

"The junta leaders obviously still view her as a paramount political threat who needs to be permanently neutralised."

Ms Suu Kyi was charged right after the military's takeover on February 1 last year.

She was accused of having improperly imported the walkie-talkies, an allegation which served as the initial justification for her continued detention.

A second charge of illegally possessing the radios was filed the following month.

Ms Suu Kyi's lawyers argued that the radios were not in her personal possession and were legitimately used to help provide for her security, but the court declined to dismiss the charges.

Military junta 'running roughshod over the human rights of everyone'

Ms Suu Kyi's party won a landslide victory in a 2020 general election, but the military claimed there was widespread electoral fraud, an assertion that independent poll watchers doubted.

Since her first guilty verdict, Ms Suu Kyi has been attending court hearings in prison clothes — a white top and a brown longyi skirt provided by the authorities.

She is being held by the military at an unknown location, where state television reported last month she would serve her sentence.

The military-installed government has not allowed any outside party to meet with Ms Suu Kyi since it seized power, despite international pressure for talks that could ease the country's violent political crisis.

The military's seizure of power was quickly met by non-violent nationwide demonstrations, which security forces quashed with deadly force, killing more than 1,400 civilians, according to a detailed list compiled by the Assistance Association for Political Prisoners.

Peaceful protests have continued amid the severe crackdown.

An armed resistance has also grown across the country, to the point that UN experts have warned the country could be sliding into civil war.

Mr Robertson accused the junta of "running roughshod over the human rights of everyone".

"Once again, Aung San Suu Kyi has become a symbol of what is happening to her country and returned to the role of political hostage of a military hell-bent on controlling power by using intimidation and violence," he said.

"Fortunately for her and the future of Myanmar, the Myanmar people's movement has grown well beyond just the leadership of one woman, and one political party."

Story By | Mazoe Ford