Police will use the polygraph to quiz some of the witnesses in their latest effort to investigate the death of firefighter Muhammad Adib Mohd Kassim.

The lie detector will be monitored by several Malaysian Anti-Corruption Commission (MACC) officers, said Bukit Aman criminal investigation chief Huzir Mohamed.

"We are collaborating with the MACC to use the polygraph and will determine who will be called again for the quizzing process," Huzir told the media at Bukit Aman today...