KUALA LUMPUR, Nov. 15 -- Malaysia Airports Holdings Bhd (MAHB) has confirmed that the storm-related water leakage seen in a viral video from KLIA Terminal 1 yesterday was triggered by a contractor's procedural lapse during ongoing roof restoration works.

In a follow-up statement issued this morning, MAHB said several areas of Terminal 1 were affected when intense rainfall hit the airport amid active waterproofing works on the main terminal roof.

Yesterday, a 26-second video clip showing water streaming through the ceiling of what appeared to be the departure hall circulated widely on social media, prompting public concern.

In the immediate aftermath of the incident, MAHB said its engineering, operations and safety teams were mobilised,...