Myanmar's ousted leader Aung San Suu Kyi has been investigated over corruption, a military government spokesman said Thursday amid local reports that at least six people were killed as security forces opened fire on anti-coup protesters.

Suu Kyi has been detained since a Feb. 1 military coup and already faces several criminal charges, including illegally importing communications equipment. But the corruption allegation would far outweigh the existing charges, likely signaling the military's readiness to keep her away from politics for a long time.