A 55-year-old Sudanese is in a critical condition following an argument in a residence at Triq id-Duluri, Ħamrun, yesterday evening.
Two men with blood on their clothes went to the Hamrun station at 10pm yesterday and the police called for medical assistance.
The police said a preliminary investigation showed that the man was injured with a knife in an argument at around 6.30pm.
A 46-year-old man, also from Sudan and lives in Hamrun, was slightly injured.
The police said that a Sudanese man was helping them in their investigations.
An inquiry is being held.