The thugs took control of the car and drove towards Karagita area near Nairobi River where they dumped both the driver and the victim before escaping with the money.
The matter was reported to police.
In a similar failed incident, an accountant with an academy in Karen escaped being robbed Sh100,000 he had withdrawn from a bank in Galleria mall.
The accountant told police people who had tried to block his way along Bogani Road claimed to be police officers but he drove past their blockade avoiding the robbery.
Police are investigating both incidents which are believed be involving people within the banks.
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