Police in the Mekong Delta province of Dong Thap on Friday arrested a local man who allegedly poured a chamber pot full of excrement onto the head of another man.
The arrest came more than three months after Huynh Anh Khoa, 31, attacked the victim.
Police explained that they needed time to review the case.
Khoa told police that he had some conflicts with the victim, who lives in the same town.
On January 30, Khoa saw the man talking to another near his house. He then decided to assault the nemesis, with the help of four others.
The victim managed to run into a local house, asking for help.
Police said they are still investigating the case.