A dozen men were involved in a battle involving knives and iron bars in Sham Shui Po, Kowloon, on Sunday night. At 10pm, two groups of men were having an argument at the intersection of Yu Chau Street and Wong Chau Street before the talks collapsed, Oriental Daily reported.
They produced knives and iron bars and attacked one another on the street. By the time police arrived at the scene with shields, the men had fled.
Officers from a police tactical unit later intercepted four men of Vietnamese origin at the intersection of Nam Cheong Street and Yee Kuk Street and allegedly found that they were carrying iron bars.
Police also said they found a 30-centimeter-long knife in an alley off Hai Tan Street.
The four suspects, aged 23 to 54, of whom three were asylum seekers with rights to stay in the city and one a Hong Kong identity-card holder, were arrested for alleged possession of offensive weapons.
Sham Shui Po police officers are investigating whether the fight was related to other criminal cases involving Vietnamese gangs in the district.