A man was seriously injured by another during an argument which took place in San Gwann on Friday afternoon, the police said.
An Italian man aged 26, resident in San Gwann, was involved in an argument with a Maltese man, aged 61, also resident in San Gwann at around 5.30pm in Triq il-Qasab.
A screwdriver was allegedly used, the police said, and the Italian man suffered serious injuries and was taken to hospital.
The Maltese man is being questioned by the police.