At least four people are set to be questioned by police over the four-day network failure experienced at KLIA and KLIA2 last week. 

The New Straits Times reported today that their names were listed in Malaysia Airports Holdings Bhd’s (MAHB) police report about the incident.

The four were said to be “familiar with the function of network code switches” and the Total Airport Management System (Tams) used at both international terminals.

The disruption had affected flight information displays, check-in counters, baggage handling systems and WiFi connection. This resulted in hours of flight delays and long queues at the airports.

Police are presently investigating the incident under Section 427 of the Penal Code.

The section concerns “committing mischief and thereby causing damage” and carries a punishment of between one and five years of jail time, or a fine, or both.

MAHB previously said that it did not rule out the possibility that “malicious intent” was behind the network failure. 

The Transport Ministry has set up a committee to investigate the cause of the disruption and to suggest measures to prevent such incidents from happening again. 

They have been given a month to prepare a detailed report to the cabinet.

The six-person team is chaired by the ministry’s secretary-general Mohd Khairul Adib Abdul Rahman and comprises Aviation Commission (Mavcom) executive chairman Nungsari Ahmad Radhi, Mavcom member Long See Wool, Civil Aviation Authority of Malaysia (CAAM) member Afzal Abdul Rahim, CAAM chief executive officer Ahmad Nizar Zolfakar and National Cyber Safety Agency chief executive Md Shah Nuri Md Zain.