The police on Saturday afternoon arrested four men believed to be involved in a case of rioting with dangerous weapon.
A fight was reported earlier at about 1am along Kaki Bukit Ave 3.
When offices arrived, four men were found injured and taken conscious to Changi General Hospital.
Immediate follow-up investigations conducted by officers from Bedok Police Division and Tampines Neighbourhood Police Centre, later established the identities of the assailants.
The four suspects, aged between 24 and 29, were arrested by 2pm on Saturday. If convicted of rioting with dangerous weapon, they face up to 10 years in jail, and caning.