The U.S. embassy in Yangon, the largest city of Myanmar, conducted a safety drill on Sunday night, during which a fire alarm has been triggered, according to local sources.
The embassy used a tear gas grenade during the drill, which triggered the embassy's fire alarm system and alarm systems in the surrounding area, at over 8 p.m. local time (1330 GMT).
It has been earlier believed that an explosion has taken place, the sources said.
The embassy apologized for not informing the police in advance. A press conference will be held on Monday morning.
