The BP staff held up at gunpoint remain "quite shaken" after the overnight robbery.
Police are still looking for two men who robbed the Te Ngae Rd BP at 2am.
A police media spokesman said the men were armed with a firearm and "made off with cigarettes and cash before leaving in a waiting vehicle".
Inquiries were ongoing, he said.
A spokeswoman for BP confirmed the store "was accessible to customers at the time and there were two employees in store".
