The survivor in a carbon monoxide poisoning incident which killed three students who were having a nap in a car remains in critical condition, said Penang Police Chief Sahabudin Abd Manan.

Nor Aqilah Mohd Safwan, 21, is at the Intensive Care Unit of Hospital Angkatan Tentera Tuanku Mizan Zainal Abidin in Kuala Lumpur...