PHOENIX - Sprouts Farmers Market is encouraging customers to check their bank accounts for unusual activity in the last month.
The chain learned that illegal software targeted customers' information at 19 of its 151 stores between Jan. 25 and Jan. 29, 2013.
Thirteen stores in Arizona and six Southern California stores were affected.
Sprouts said in a news release that they believe fewer than 2 percent of its card transactions in January were possibly compromised.
The card terminals in question were replaced, Sprouts said.
If you used the Sprouts PIN pad devices when shopping between Jan. 25 and Jan. 29, 2013 in the following locations, the chain is urging you to check your bank statements immediately.
Unusual transactions should be reported to your credit card company or bank as soon as possible.
Avondale (1813 N. Dysart Rd. 85392)
Chandler (1959 W. Ray Rd. 85224)
Chandler (2855 S. Alma School Rd. 85248)
Gilbert (2582 S. Val Vista Dr. 85296)
Glendale (5130 W. Peoria Ave. 85302)
Glendale (5665 W. Bell Rd. 85308)
Mesa (1933 E. Brown Rd. 85203)
Mesa (5225 E. Southern Ave. 85206)
Oro Valley (7665 N. Oracle Way 85704)
Peoria (8375 W. Thunderbird Rd. 85381)
Phoenix (8040 N. 19th Ave. 85021
Phoenix (2824 E. Indian School Rd. 85016)
Surprise (13759 W. Bell Rd. 85374)
If you happened to be in Southern California during that time or have friends and family there, here are the California stores affected:
Claremont (835 W. Foothill Blvd. 91711)
El Cajon (152 North 2nd St. 92021)
Irvine (3775 Alton Parkway 92606)
San Marcos (149 South Las Posas Rd. 92078)
Thousand Oaks (600 West Hillcrest Dr. 91360)
Torrance (4230 Pacific Coast Highway 90505)