Prosecutors in Ho Chi Minh City are set to press charges against two men for killing one official and seriously injuring another two last September.
Investigations show that Nguyen Trong Nhan, 31, and Luong Hoai Sang, 21, took along a taser and a knife with them to meet Bui Ngo Thi My, head of Phu Nhuan District's Natural Resources and Environment Agency, at her house at around noon on September 20.
The duo planned to convince My to spare Nhan's wife and not punish the latter for corruption. They told the police that they also planned to rob My's house.
When My refused their demand, Nhan strangled her and also beat her with a tennis racket, while Sang used the taser on her.
They also attacked My's 25-year-old daughter.
Dang Thu Hong, deputy secretary of the Phu Nhuan Party Unit, then visited My and was stabbed to death on the spot, police said.
The assailants also stabbed My and her daughter, causing critical injuries, before some militiamen stationed nearby heard their cries for help. About 100 police and militiamen were mobilized to the site and the duo were placed under arrest.