Knives and any other weapon that came to hand - including wooden rods and pieces of metal - were used during a fight in Tarxien on Wednesday.
The fight, reportedly between a group of Syrians, took place in Triq Bjaġju Galea. It started in the evening and escalated, with the police being called in at around 9pm.
They found that one of the men, a 23-year-old from Ħamrun, sustained serious hand injuries and had to be hospitalised.
Investigations are still underway.