A police officer in the Mekong Delta's Vinh Long Province died Friday after he was stabbed while walking down a local street.
Lieutenant Nguyen Thanh Tuong, 31, died on the way to hospital, Tuoi Tre reported.
Tuong was attacked by three people from behind and was stabbed twice.
Vinh Long police have arrested three suspected attackers, including Ho Anh Duy, Tran Chi Dieu and Nguyen Tan Vu, all from the neighborhood where the attack occured.
Further investigations are underway, police said.