Wynnum detectives are appealing for public assistance in relation to three armed robberies which occurred between October 14 and October 24.
Around 4.50pm on October 14 a man allegedly armed with what appeared to be a bladed implement entered a West Avenue Wynnum West store and demanded money from a staff member before assaulting him.
The man fled the scene with a sum of cash.
The staff member was transported to Redland Hospital with facial injuries.
The man is described as being in Caucasian in appearance, around 178cm tall and of a solid build with shaved hair.
He was wearing a grey t-shirt with a circular pattern on the upper chest and back, blue jeans and a black belt with studs and white shoes.
Detectives have released an image and comfit of a man who they believe can assist their investigation.
The man is described as being of Caucasian appearance, around 183cm tall, with short hair and a solid build. He spoke with a New Zealand accent and is believed to be in his late 20s or early 30s.
Shortly after 2pm on October 24 a man allegedly armed with a knife entered an Edith Street Wynnum store, made demands for money and punched an attendant.
The man fled with a sum of cash and was last seen heading towards Florence Street.
The attendant was transported to the Mater Hospital.
Then man is described as being Caucasian in appearance, with a proportionate build and about 180cm tall. He was wearing dark clothing and his face was covered with cloth.
Anyone with information is urged to call Wynnum District Criminal Investigation Branch on 3308 8166 or Crimestoppers.
Anyone with information which could assist police with their investigations should contact Crime Stoppers anonymously via 1800 333 000 or crimestoppers.com.au 24hrs a day.
Crime Stoppers is a charitable community volunteer organisation working in partnership with the Queensland Police Service.