south-west Brisbane service station

The south-west Brisbane service station being hit by three masked bandits on Friday morning. Courtesy: Queensland Police Service

A young woman has been robbed at gunpoint by multiple men in a ute while walking home from an outer-Brisbane service station that had also been held up by bandits earlier in the day.

The initial incident happened at a service station on Sumners Roads in Riverhills about 2.30am on Friday when two men, armed with a hammer and machete, forced their way into the business by smashing the glass doors.

The bandits threatened the attendant and hit him in the head with the machete before he handed over cash and the armed robbers fled in a stolen white Mazda 3 driven by an accomplice.

The attendant suffered only minor injuries and investigations were continuing.

About 1.40pm a 17-year-old woman was walking home from the same service station when she was confronted by several men in a Toyota Hilux ute, according to a police spokeswoman.

The bandits demanded cash and threatened the victim with a gun, she complied and after the ordeal ran to her nearby home where the alarm was raised.

A Queensland Police Service spokeswoman said the separate incidents were not believed to be linked and investigations were also ongoing into the second robbery.