Prime Minister Tun Dr Mahathir Mohamad says Malaysia Airports Holdings Bhd (MAHB) must investigate the actual cause of the recent systems malfunction at the Kuala Lumpur International Airport (KLIA). <br /><br />Speaking to Malaysian journalists after concluding his three-day official visit to Vietnam on Wednesday, Dr Mahathir said similar systems are in use at other airports and did not face any problem.
