Two women and one man were captured with materials used for making M-150 chemical bombs.
They admitted for involving in blasts at regional government office. Further investigation by the authorities is underway.
The explosions took place at around 5:30 p.m. (local time) in the office building, which lies in Dagon township. Police found two home-made M-150 chemical bombs in the building.
The explosions were similar in nature to other blasts in Yangon in the last few days - one at a local immigration office on November 24, and two others at two supermarkets on November 20 and on November 17.