Stockholm - Swedish poultry producer Lantmannen Kronfagel said Friday it has recalled its frozen chicken products, following new discoveries of glass in the food.

"Two of the incidents concern frozen whole chicken, and the other two concern chicken drumsticks," chief executive Jan Henriksen said.

Henriksen said the recall would give the group "time to get to the root of the problem without having to worry about glass turning up in more frozen chicken."

The company and police have launched a probe but have been unable to determine whether the glass got into the products accidentally during production or whether consumers were involved.

A dozen cases have been reported since glass was first found in frozen chicken breasts a week ago.

Lantmannen Kronfagel earlier this week stepped up inspections at its facilities. The group is owned by 42,000 Swedish farmers. (dpa)