SAN DIEGO (CNS) - Authorities asked for the public's help Wednesday in identifying a pair of thieves who stole wallets from distracted shoppers at several San Diego-area grocery stores and used stolen credit cards to rack up a total of about $10,000 worth of purchases and cash advances.

Three women, ages 63, 65 and 85, fell prey to the crimes, which occurred at Windmill Farms market in Del Cerro on June 3, at a Ralphs store in La Mesa on July 6 and at a Vons supermarket in Carlsbad on July 8, according to police.

In the first case, the victim saw only a single perpetrator, a heavyset black woman with medium-length graying hair and reading glasses, Lt. Dan Willis said. A second bandit with a similar general description took part in the other two thefts, according to Willis.

In each instance, the victim's billfold disappeared from her purse while her back was turned or as one of the crooks distracted her with questions.

Surveillance cameras captured video images of the thieves, the lieutenant said.

Anyone with information about the thefts is asked to call San Diego County Crime Stoppers at (888) 580-8477 or e-mail the nonprofit agency at Tipsters may remain anonymous and could be eligible for a reward of up to $1,000.