Police say a Dong Nai high school teacher died instantly after opening an anonymous package left on her doorstep.
Neighbors say a familiar man left the anonymous package at the front door of Pham Thi Lan, 54 who died instantly after opening the box on Thursday morning.
The explosion allegedly caused significant damage to Doan Ket High School teachers tenementin the province’s Tan Phu district.
Police have blockaded the area around the explosion to conduct a thorough investigation.
The incident occurred on Vietnam Teacher’s day (November 20) a national holiday during which students present their teachers with flowers or gifts to express their gratitude.