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Pieces of a small calculator have been found in hot cross buns sold at Pasadena Foodland.

The hot cross buns were recalled on Monday after a customer complained about bits of plastic they have found in their buns.

SA Health said the recall was precautionary and there were no reports of injury.

How the calculator ended up inside the batch of hot cross buns is being investigated but there is no evidence it was a malicious act.

Operator of the Pasadena Foodland, the Chapley Group, is working with SA Health to notify customers who may have purchased the hot cross buns.

SA Health’s Acting Chief Public Health Officer, Dr Chris Lease is urging people to check the packed date and return the hot cross buns to Pasadena for a full refund.

“The concern with a calculator is that it contains a button battery which, if swallowed, can cause serious injury or even death,” Dr Lease said.

The recall includes the following products that were produced on 7 April, 2019:

* Choc Chip Hot Cross Buns 6 pack

* Cranberry and White Choc Hot Cross Buns 6 pack

* Hot Cross Buns 6 pack

* Hot Cross Buns Large Loose

* Hot Cross Buns Fruitless 6 pack

* Mini Hot Cross Buns 12 pack

* Mini Choc Chip Hot Cross Buns 12 pack

* Premium Hot Cross Buns 500g

* Various weights, 6 or 12 in a pack, packed on 7 April 2019

No other Pasadena Foodland bakery products are affected by the recall.