A man wielding a sword held up a Bentley TAB last night.
Just before 7.30pm, a man entered the TAB on the corner of Albany Highway and Tate Street and threatened staff with a sword.
It is understood he left with a quantity of cash.
Inspector Trevor Davis said the offender was described as dark-skinned and about 178cm tall.
He was wearing a black hooded jacket, black shorts and gym shoes.
Anyone with information is asked to call Crime Stoppers on 1800 333 000.