She "gave her statement at the court by herself" in response to charges of incitement related to two February statements criticising the coup, the source said.

The contents of her testimony on Tuesday "cannot be revealed" until the court has certified them, the source said, adding this was expected next week.

Media have been barred from attending Suu Kyi's trial at the special court in the military-built capital Naypyidaw and the junta recently banned her legal team from speaking to the media.

Myanmar has been in turmoil since the February 1 coup, with nationwide protests and more than 1,100 people killed by security forces, according to a local monitoring group.

Suu Kyi went on trial in June, four months after she was taken into custody, and faces a raft of charges that could see her jailed for decades.

In September, she pleaded not guilty to incitement charges, each of which carries a maximum of three years in prison.