A bomb attack on a government compound in the Myanmar border hub of Myawady killed five government and security officials and wounded 11 policemen, sources told AFP on Monday.
The town on the border with Thailand has seen sporadic clashes between the military and anti-junta fighters since a coup in 2021 plunged the country into turmoil.
On Sunday, two "drop bombs" fell into a compound containing the district police office and general administration office, a military source told AFP.
As officials took "security measures" after the blasts, another two bombs were dropped, killing five and wounding 11, they said, requesting anonymity as they were not authorized to talk to the media.
The dead included a military officer, two police officers and two officials from the administration department, they said.
Eleven "junior and senior" police officers were wounded, five critically, they added.
A local police source who also requested anonymity confirmed the incident and casualty figures. Neither source said who was responsible for the attack.
The junta said "some security members and government staff" were wounded in the attack, without giving a figure.
It blamed anti-coup "People's Defence Forces" and the Karen National Liberation Army, an established ethnic rebel group that has fought the military for decades.
Anti-junta fighters battling to overturn the coup that deposed Aung San Suu Kyi's government have used commercial drones for surveillance and also as crude bomb-dropping devices.
On monday, Malaysia called on its Southeast Asian partners to impose "strong" measures against Myanmar's ruling generals, saying "obstacles" they created had blocked a peace plan for the strife-torn country.
The unusually blunt message from Malaysia came as top Southeast Asian diplomats met to review their regional bloc's stalled peace plan for Myanmar, with frustration growing with the military's failure to end violence more than two years after it seized power in a coup.