The sentencing was the first in a series of cases in which the 76-year-old Nobel laureate is being prosecuted since the army seized power on Feb. 1.
The ruling by the court in Naypyitaw was conveyed by a legal official who insisted on anonymity for fear of being punished by the authorities. Suu Kyi's trials are closed to the media and spectators, and her lawyers, who had been the sole source of information on the proceedings, were served with gag orders in October forbidding them from releasing information.
Defense lawyers are expected to file appeals in the coming days for Suu Kyi and two colleagues who were also convicted Monday, the legal official said. Opposition to military rule remains strong 10 months after the army's takeover, and the verdict may inflame tensions even further. The verdicts in Suu Kyi's first two cases, on incitement — for allegedly spreading false or inflammatory information that could disturb public order — and violating the Natural Disaster Management Law for allegedly breaching coronavirus restrictions, were supposed to be delivered last Tuesday. However, the court postponed its ruling with no explanation.