Durham Regional police say they have arrested two people and are looking for two more in connection with a continuing credit card fraud scheme in Whitby.

Employees at the Whitby Toys R Us store first became suspicious that the suspects were using fraudulent credit cards to buy electronics in March.

Durham police began investigating and on April 22, they executed a search warrant at a residence on Markham's Beechgrove Crescent. There, police said they found "a number of high-end electronic items and gift cards," all of which were obtained fraudulently.

Two people were arrested and charged, and warrants are pending for another two suspects.

Ming Liu, 22, and Fang Dong, 19, both of Markham, are charged with fraud and possession of property obtained by crime. Liu is also charged with possession of a credit card obtained by crime and unauthorized possession of credit card data. Dong faces an additional charge of breach of recognizance.

Both suspects were held in police custody pending bail hearings.

Monday's announcement marks the fourth time in two months that Durham police have announced arrests in credit or debit card fraud schemes.

Early in March, Durham police, working with the OPP, arrested six people they say allegedly purchased vehicles and other property using fraudulent credit cards obtained through identity theft. Police recovered $250,000 in property and cash connected with the fraud scheme. All the suspects were Torontoians.

Next, a police officer spotted some ATM fraud equipment during a routine traffic stop. Two men from Toronto were arrested.

Later that month, Durham police and the OPP announced they had arrested six people in connection with an ATM tampering scheme. The suspects in that case face fraud and identity-theft-related charges.