More than 72 charges totaling about $4,071 were made without permission to a credit account held by a Rochester Hills resident, authorities said.
The victim told the Oakland County Sheriff's Office that an unknown person obtained her Sam's Club credit card number and made the charges without her consent. She was notified by a text message from the bank that an $800 charge was made to her account, which she said she didn't authorize.
A subsequent audit by the bank found that 71 other charges had been made since January 27 without the victim's permission.
The sheriff's office is investigating.