A woman claims a MasterChef knife she received in a Coles promotion snapped clean in half while she was using it.
The customer posted a photo online of the stainless steel cook's knife broken in two sitting on a green chopping board.
"Be careful anyone using Coles MasterChef knives, they split!" the customer warned on Facebook.
Another shopper shared a photo of her MasterChef knife, claiming it had also split.
Coles supermarket responded to the woman's post requesting more details so it can investigate.
"We're concerned to see this and we hope you're okay?" the supermarket said.
The Coles MasterChef knife promotion was announced in November with customers earning credits by scanning their Flybuys when they spend $20 or more in a transaction.
After racking up enough credit, the customers could redeem them for a MasterChef knife.
There were six knives in the collection – a utility knife, small santoku-style knife, bread knife, cook's knife, a large santoku and a two-pack of steak knives.
More complaints over Coles MasterChef knife
The latest complaint comes three months after a woman claimed a steak knife she received as part of the promotion cracked almost all the way though.
"Did no more than slice a steak or two and the odd chop, plus a trip or two in the dishwasher," the customer said.
"[Is this a] known fault? Anyone else have the same? Glad it didn't fly off into someone."
The woman added her biggest concern was that others could be injured if their knives broke.
Yahoo News Australia has contacted Coles for comment about the latest incident.
Do you have a story tip? Email: email@example.com.