Four foreign nationals were charged with rioting on Tuesday following a fight near Singapore Post Centre at Paya Lebar.
Bedok police seized a broken wooden plank and fragments of a broken beer bottle from the scene. They arrested four men.
Indian nationals Sikander Singh, 27, and Ramandeep Singh, 28, are alleged to have been part of an unlawful assembly with several others and caused hurt to an unknown Bangladeshi.
Two Bangladeshi nationals, Kamrul Hasan Hazi Abul Basar, 28, and Md Rony Sikder Md Ramzan Sikder, 26, were allegedly part of an illegal assembly when one or more of them caused hurt to an unknown Indian subject.
All four are remanded at Bedok police division for a week for further investigation.
Their case will be mentioned on March 18.
In a statement, police said they were alerted to a case of fight involving 10 male foreigners on Sunday at 8.44pm.
Preliminary investigations showed there had been a dispute between two groups of people before the fight.
The maximum penalty for rioting is seven years' jail and caning.