A man armed with a rifle attempted to rob a post office at Ellen Grove this morning.
The man entered the Waterford Road business around 8.30am, threatened a male employee and demanded cash.
The employee dived under the front counter and the offender fled the store empty handed.
He was last seen leaving in a stolen white 2012 Toyota Corolla sedan with Queensland registration 412SQW.
The man is described as approximately 180cms tall, obese and was wearing a black balaclava, long sleeved black jumper, light blue jeans and white shoes.
No one was physically injured during the robbery and police investigations are continuing.