Giant Eagle, the Pittsburgh-based grocery chain, is recalling bags of shredded Iceberg lettuce and some deli sandwiches because they may be contaminated with Listeria.

The Food and Drug Administration informed the company that a random sample of Giant Eagle Farmer’s Market 8-ounce package of Shredded Iceberg Lettuce, produced by River Ranch Fresh Foods, of Salinas, CA, had tested positive for Listeria monocytogenes.

There are no reports of illnesses connected to the lettuce.

The recalled packages of shredded iceberg lettuce have a use-by date of Oct. 14, 2011 and the UPC 3003430195.

The recalled lettuce was also used in some prepared deli ring sandwiches:

—  Giant Eagle Large Italian Sandwich Ring, UPC 23755100000

—  Giant Eagle Mini Italian Sandwich Ring, UPC 24755500000

—  Giant Eagle Large New York Sandwich Ring, UPC 22755100000

—  Giant Eagle Mini New York Sandwich Ring, UPC 25755500000

—  Giant Eagle Large All America Sandwich Ring, UPC 21755100000

—  Giant Eagle Mini All American Sandwich Ring, UPC 26755500000

Giant Eagle said it has contacted customers who purchased the recalled products, telling them throw the food away or return it to the store for a refund.

Giant Eagle Advantage Card holders are encouraged to update contact information if their mailing address or phone number has recently changed. Call 1-800-474-4777.

Listeria is typically found in deli meats, hot dogs and soft cheeses made from unpasteurized milk. But the bacteria can also contaminate produce, as evidenced by the current outbreak linked to whole cantaloupes from Colorado.

Last week, Church Brothers of Salinas, CA. recalled 2,498 cartons of chopped or shredded romaine because it might be contaminated with Listeria. That recall was not connected to any illnesses. The random check that detected Listeria in a single bag of romaine was part of an FDA research program to understand the prevalence of the bacteria in produce, particularly lettuce and leafy greens.