PETALING JAYA: A computer glitch at Shell Malaysia's centralised monitoring system crippled the operation of 900 of its petrol stations nationwide Monday as motorists were unable to fill up their tanks.

The glitch started at midnight resulting in the petrol pumps, which are linked to the system, to stop dispensing fuel.

Only petrol stations with the older version of the pumps, which are not linked directly to the system, were able to dispense the fuel. However, only a handful of the stations has such older machines.

The transaction at the older pumps can only be done with cash payments as the credit card readers attached to these machines were unable to activate and connect to the system.

A Shell spokesperson confirmed the problem and said they are working to resolve the issue as soon as possible.