NORTHFIELD, Ill. - Kraft Foods is recalling white chocolate distributed in the United States and Canada because of possible salmonella contamination.

Kraft says consumers who purchased its 170-gram  should immediately discard the product.

In Canada, the product is sold under the name Baker's White Chocolate Baking Squares. It has a UPC Code 0 66188 00860 3 and two Best Before dates of 08 AL 04 and 08 MA 19.

Kraft Canada Inc. said it is voluntarily recalling the product which was distributed across the country.

The U.S. Food and Drug Administration has detected the presence of salmonella in some packages of the white chocolate baking squares during tests.

Kraft says it's aggressively investigating the source of the problem.

There have been no reported illnesses associated with consumption of this product, Kraft said.

In The U.S., the recall is only for Baker's Premium White Chocolate Baking Squares. Kraft says no other varieties of Baker's White Chocolate or any other Baker's products sold in the United States or Canada are affected by the recall.

The recalled product was distributed across the United States and have the UPC Code 0043000252200 and for best when used by March 31, April 1, April 2 and April 3, 2008.

The Canadian Food Inspection Agency has been notified of this recall. Consumers and industry can contact Kraft Canada Inc. at 1-800-816-9432 with any questions they may have or to request reimbursement for purchased product, Kraft Canada said.

Northfield-based Kraft, which markets a variety of products, including Oscar Mayer meats; Post cereals and Nabisco cookies and crackers, is the United States' largest food and beverage companies.

Food contaminated with Salmonella may not look or smell spoiled. Consumption of food contaminated with this bacteria may cause salmonellosis, a foodborne illness.

In young children, the elderly and people with weakened immune systems, salmonellosis may cause serious and sometimes deadly infections.