A 74-year-old man died in hospital yesterday after being chopped 20 to 30 times by his 70-year-old flatmate in their cubicle apartment in Sham Shui Po. Police arrested the flatmate and he was being detained at Sham Shui Po police station last night for questioning. No charges had been laid. The fatal chopping attack - the second involving elderly co-tenants this month - prompted the Society for Community Organisation to call on the government to set up more social work outreach teams to help elderly people living alone. More than 10,000 people live in multiple-cubicle flats in Sham Shui Po and about 30 per cent are over 60. The latest attack occurred on Wednesday night when Wong Kwun-hung, 74, had an argument with his flatmate in their third-floor flat in Yiu Tung Street. The argument began at about 9.15pm when a rusty old window opened by Wong made a noise that upset his flatmate. A police officer said Wong had thrown a chair at his flatmate during the argument that followed. 'The flatmate got a chopper and chopped the victim 20 to 30 times in the head, shoulders, body and arms,' the officer said. Wong had lost consciousness by the time medics arrived. He was taken to United Christian Hospital, where he was declared dead at 2.25pm yesterday. Officers arrested the attacker at the scene and seized the chopper. He suffered minor injuries in the incident and was discharged from hospital after treatment. Police said the chopping had left blood all over the flat. On October 1, Leung Kin-tung, 77, was found chopped to death in a flat in Tak Yam House, On Yam Estate, in Kwai Chung. The body of his 81-year-old flatmate, who police think chopped Leung to death, was found floating in the sea off Tsuen Wan on October 3. Police believe he jumped into the sea to commit suicide. Community organiser Sze Lai-shan from the Society for Community Organisation said there were not enough social workers providing outreach services to single elderly people living in cubicle flats. 'Outreaching social workers can pay regular visits to elderly people to see what assistance they need, so that early mediation and help can be offered to them in order to avoid similar tragedies,' she said.