A former U.S. Postal Service letter carrier who worked in Southern California and posted pictures on Instagram holding large stacks of cash was sentenced to five years and three months in federal prison for stealing and selling debit and credit cards, as well as checks from the mail.
Mary Ann Magdamit, 31, of Carson, pleaded guilty Aug. 11 to one count of conspiracy to commit bank fraud for crimes committed between at least 2022 and July 2025 while she worked at the Torrance Main Post Office, according to the U.S. Department of Justice.
Officials say Magdamit, who has been in federal custody since July 1, stole mail containing checks, personal information, and debit and credit cards that she activated online and used to make purchases. Investigators learned Magdamit sold some of the stolen cards to her accomplices, using the money to take international trips and buy luxury goods.
“She also arranged to have her co-conspirators cash the stolen checks, usually by people using counterfeit identity documents in the name of the check’s payee,” according to the DOJ.
A December 2024 search of Magdamit’s apartment turned up 133 stolen credit and debit cards, 16 U.S. Department of Treasury checks, and a loaded, unserialized Glock-clone, with an extended 27-round magazine, commonly referred to as a “ghost gun.”
Mary Ann Magdamit is seen in an image provided by the U.S. Department of Justice.
Evidence is seen from the case against former U.S. Postal worker Mary Ann Magdamit. (U.S. Department of Justice)
Evidence is seen from the case against former U.S. Postal worker Mary Ann Magdamit. (U.S. Department of Justice)
“She also used stolen cards on international trips she took to Turks and Caicos and Aruba,” the DOJ said. In one Instagram post, Magdamit was seen flaunting stacks of $100 bills.
Magdamit was arrested on July 1 after agents learned she was continuing to make purchases with victims’ credit cards, which were found during a second search of her apartment that day.
She was sentenced by U.S. District Judge John F. Walter, who also ordered her to pay $660,200 in restitution. Magdamit will also need to forfeit a Rolex watch and other luxury goods, according to the DOJ.
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