A 16-year-old Oxley boy has been charged with aggravated robbery and assault after an employee was allegedly attacked during an attempted theft at a Calwell liquor store.

Police said two masked males entered the liquor store at Calwell Shopping Centre about 1.30pm on Saturday and attempted to steal alcohol.

As the pair left the store, an employee tried to stop one of them and was allegedly assaulted by the other.

The employee suffered injuries and received medical treatment at the scene.

After reviewing CCTV footage and searching the surrounding area, police found the 16-year-old about 2.30pm, a short distance from the shopping centre.

He was arrested and charged with aggravated robbery in company and common assault.

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