KOTA KINABALU: A mother was shocked to find her teenage son dead in his room just 12 hours after he returned home with a bloodied nose.
The Form Four student of SMK Kuhara in Tawau was apparently assaulted by his girlfriend's brother but told his mother that an unknown person assaulted him.
Tawau police chief Asst Comm Fadil Marsus said 16-year-old Mohd Ayieruchizamsyah Lambang (pic) was found lifeless by his mother when she went to check on him in his room at their Kg Pisang house in Tawau at around 7.30am Monday.
He said police arrested a 19-year-old labourer without documents for investigations into the death of the boy.
The suspect is believed to be the brother of the dead boy's girlfriend.
ACP Fadil said the mother told police that her son - the third among five siblings - had returned home with a bloodied nose around 7.30pm Sunday.
"He told his mother that he was beaten up by an unknown person. The boy went into his room and slept at around 8pm on Sunday."
At about 7.30am Monday, the mother went into the room and found the boy motionless, and on checking found that he also had injuries on the head and cheeks which she had not realised the night before.
ACP Fadil said initial investigations showed that the boy had gone to the Taman Sentosa playground to meet his 15-year-old girlfriend when her brother spotted them at about 6pm on Sunday.
The suspect apparently scolded them and questioned the boy on where he was planning to take his sister.
The suspect then ordered his sister to go home before punching the victim who then ran away.
He said the suspect then grabbed a piece of wood to hit the boy on the head but the boy slipped in the muddy ground and fell.
Two people came to stop the suspect and allowed the boy to return home.
He said police believe that the motive was to stop the boy from continuing his relationship with the girl, who had run away from home previously with the victim.
He said police have also detained the girl for questioning.Police have also recovered the piece of wood piece that was believed to have been used as a weapon.