TRENTON, N.J. (AP)  -- Military officials say beef sold at some bases around the country -- including the submarine base in Connecticut -- may have be contaminated with E. coli.

The Defense Department issued a voluntary recall Thursday on all 85 percent lean ground beef sold at the affected bases. The military suggests that anyone who bought the meat this month should throw it away or return it for a full refund.

The department issued the recall after conducting lab tests on beef from one supplier.

The recall affects the military's stores in Fort Monmouth, N.J., Lakehurst Navy Base, N.J., Great Lakes, Ill.; Fort McCoy, Wis.; Bolling Air Force Base, D.C.; Carlisle Barracks, Pa.; Naval Submarine Base Groton, Conn.; Tobyhanna Army Depot, Pa.; Fort Carson, Colo.; and Fort Leavenworth, Kan.