In a third such incident in Rangoon in a week, four bombs exploded yesterday at the Immigration Department in South Dagon Township.
The attackers used heavy weapons, most likely mortar or artillery fire, damaging some commercial buildings.
Chinese armed forces are on high alert in the Sino-Burmese border region as clashes between Burmese soldiers and rebels continue in Kokang.
A bomb explodes outside a hotel in Hpakant in Kachin State, injuring a father and his daughter on a moped.
Saw Htun Htun was found guilty of the murder of two persons in connection with the bombing of a guesthouse in Taungoo in 2013.
The Burmese government plans to set up a national counter-terrorism body in the near future to protect the country from extremist groups, according to a senior police official.