Suu Kyi, 76, has been detained since the generals ousted her government on February 1, ending the Southeast Asian country's brief period of democracy.

She has since been hit with a series of charges, including violating the official secrets act, corruption and electoral fraud, and she faces decades in jail if convicted on all counts.

On Monday Suu Kyi was sentenced to two years for incitement against the military and another two years for breaching a natural disaster law relating to Covid, junta spokesman Zaw Min Tun told AFP by phone.

Former president Win Myint was also jailed for four years on the same charges, he said, but added they would not yet be taken to prison.

"They will face other charges from the places where they are staying now", he added, referring to their detention in the capital of Naypyidaw but without giving further details.

Journalists have been barred from proceedings in the special court in Naypyidaw and Suu Kyi's lawyers were recently banned from speaking to the media.

In recent weeks, the trials of other ranking members of Suu Kyi's National League for Democracy have wrapped up, with the junta doling out harsh sentences.

A former chief minister was sentenced to 75 years in jail this month, while a close Suu Kyi aide was jailed for 20.

- 'Retribution' -

Amnesty International immediately condemned the sentences against Suu Kyi.

"The harsh sentences handed down to Aung San Suu Kyi on these bogus charges are the latest example of the military's determination to eliminate all opposition and suffocate freedoms in Myanmar," said Amnesty deputy regional director for Campaigns Ming Yu Hah.

"The court's farcical and corrupt decision is part of a devastating pattern of arbitrary punishment that has seen more than 1,300 people killed and thousands arrested since the military coup in February."

International Crisis Group's Myanmar senior advisor Richard Horsey also told AFP the sentences "were about retribution and a show of power by the military".

"It would be surprising, though, if she were sent to prison. More likely, she'll serve out this and subsequent terms at her house or a regime 'guest house'."

The military, which has dominated life in Myanmar for decades, has defended its coup, claiming fraud allegations in last year's general election, which Suu Kyi's party won comfortably.

International pressure on the junta to restore democracy swiftly has shown no sign of knocking the generals off course, and bloody clashes with anti-coup protesters continue across the country.