SIBU: Police have solved the murder case at RTM Road here involving four family members, including two children, with the arrest of a 17-year-old youth and his 44-year-old mother Thursday night. (Photo courtesy of The Star Online)

“I am happy to announce that we have solved the case within four days since the incident happened on Monday.

“We have identified the suspect. He and his mother are in our custody for us to get more information to complete the investigation papers,” Sarawak deputy police commissioner Datuk Law Heng Soon told reporters here Friday.

He said the youth worked as a lorry attendant while his mother was a housewife.

“Both live quite close to the victims.

“We detained the mother as we believe she can assist us in our investigation,” he said.

Law said as soon as the investigation papers were completed, they would be handed over to the Public Prosecutor’s Office for further instructions.

“Even now, we have enough information for us to establish a case,” he added.

In the morning incident, businessman Ling Tong Hock, 36, his mother Leong Nyuk Lan, 76, his son David Ling Chei Qi, 10, and daughter Amy Ling Zi Jiun, seven, were either beaten or slashed to death.

Another child, Kelvin Ling Chei You, eight, is still in critical condition at the children’s Intensive Care Unit of the Sarawak General Hospital in Kuching.

Ling’s Chinese national wife Li Xiao Lan, 28, had reportedly said that she fled through a window to a neighbour’s house during the incident. But she was then remanded.

Law said she was released Friday following the arrest of the youth and his mother.