A 13-year-old teenager smothered his 20-year-old sister after a row over the Internet password at home, according to Britain's Mirror website.

The young man had changed the Wi-Fi password, due to the slow network due to pressure on the network due to its use by all family members.

The family soon discovered what he had done, and the girl pulled the receiver from the electricity and hidden it in her room, which angered her younger brother, which led them to enter into a fight that ended in suffocation of the girl.

The mother tried to intervene, and she also called the emergency room who arrived ten minutes later, but the girl was dead.

The perpetrator was detained in a youth detention center, pending the court's decision.

A medical expert said that the human brain can tolerate 3-6 minutes without oxygen before permanent damage begins, and an interruption of oxygen to the brain causes 10 minutes to die.