A 15-year-old South Korean boy committed suicide after killing his mother for scolding him over excessive computer game playing, a report said on Tuesday.
The boy's sister found their 43-year-old mother dead in her bedroom and her brother hanging from a gas pipe at their home in the southern port of Busan, Yonhap news agency said.
The 12-year-old daughter reported to police that her mother and brother often had fights about his game addiction, Yonhap reported.
It quoted investigators saying the boy apparently committed suicide out of guilt at killing his mother.
South Korea is one of the world's most wired societies, but there have been sporadic reports of deaths related to Internet game addiction in the country.
In February a 32-year-old man died after reportedly playing for five days with few breaks.
A month later police arrested a couple accused of leaving their baby daughter to starve to death while they raised a "virtual" child on the Internet.
A post mortem examination showed the baby suffered a long period of malnutrition.
The government, which estimates South Korea has about two million web addicts, has announced a campaign to combat the affliction.
From next year it will offer free software to people at risk, to limit the time they spend on the web.
A consensual shutdown programme restricts usage to a time set by a guardian or user. Another called Internet Fatigue tries to make players become bored over time.