SHAH ALAM: A lorry driver who rammed into 11 vehicles at a traffic light junction in Alam Budiman, Persiaran Mokhtar Dahari, yesterday tested positive for amphetamine and methamphetamine.

The collision, involving a 10-tonne lorry and 11 other vehicles at the traffic lights on Jalan Mokhtar Dahari, Section U10, left four people injured, including a 58-year-old man who sustained critical head injuries.

The 51-year-old lorry driver was arrested to assist in investigations after a urine test returned positive for both substances.

Shah Alam district police chief Assistant Commissioner Sarudin Samah said the 4.20pm collision involved 12 vehicles, including the 10-tonne lorry.