Two men were injured in an argument in St Paul’s Bay early on Saturday.
The police said a knife is believed to have been used in the argument, between a 30-year-old Nigerian who lives in St Paul’s Bay and 37-year-old Nigerien, who lives in Gżira.
The argument took place in Triq it-Tamar at 1.30am.
The older man suffered grievous injuries, the younger one slight.
An inquiry is being held.
The police are investigating.