By Emma Young
Police have issued a CCTV image of a man wanted for questioning over a robbery at Carlisle's The Lunch Club last month, when an offender threatened staff with a knife, then smashed a till over a cashier's head.
The deli is the same one at which police shot and killed a man threatening another worker with a knife in 2014.
About 2.40pm on December 12, a man entered the Oats Street deli and threatened counter staff with a knife while demanding money, police spokesman Andrew Maher said.
"The man grabbed the register and the staff intervened. The man then threw the cash register at the staff before fleeing the store on foot."
A 39-year-old cashier was taken to hospital with non-life threatening injuries to her head from the till.
The offender was last seen running south on Harris Street.
Detectives believe the male pictured, captured on CCTV nearby shortly after the incident, may be able to assist with inquiries.
He was light-skinned and about 175 centimetres tall, with a medium build and short dark curly hair.
Call Crime Stoppers on 1800 333 000 or make a report online at crimestopperswa.com.au.