A 45-year-old man told police that his 48-year-old co-worker threatened him and attacked him with a knife during an argument at an employee hostel on Fan Kam Road at about 2pm on 15 October.
The men, who were co-workers, had argued over a trivial matter in a village house. The injured man had a neck wound and was conscious when taken to North District Hospital. Police found a kitchen cleaver about 20 centimetres long at the scene.
After an initial investigation, police arrested the 48-year-old on suspicion of criminal intimidation and assault occasioning bodily harm.