A woman was allegedly assaulted and had cash taken in a robbery in the early hours of Sunday morning in Woolston.
The incident happened on Sheldon St at about 12.05am.
The victim was in a vehicle and was allegedly hit on the back of the head and had cash taken from her by three offenders.
It is unclear at this stage if the trio used a weapon in the robbery, a police communications spokesman said.
Police arrested a 24-year-old man and a male and female, who are both 15-years-old, and charged them with aggravated robbery.
They will appear in the district court on Monday.