ACT Health is encouraging Canberrans to check their freezers after issuing a consumer health notice for all Coles Gungahlin store-made bakery products baked between November 1 and February 16.
ACT chief health officer Paul Kelly said a member of the public found a piece of metal in bread bought from the store.
"It appears to have been contaminated by fragments of metal wire originating from a piece of bakery equipment," Dr Kelly said.
"Coles were informed and immediately suspended all bread making on site as well as clearing the shelves of the product.
"Following an on site investigation, ACT Health inspectors decided that as a precautionary measure all bakery items baked during this period should not be consumed."
Dr Kelly urged people to check their fridges and freezers for all Coles' fresh-baked loaves, rolls, buns and scrolls baked during the notice period.
Coles has advised they will refund all Coles baked bread that is returned to the Gungahlin store.