Former Los Angeles USPS letter carrier pleads guilty to stealing checks, cash from mail at Torrance Post Office

A former U.S. Postal Service letter carrier pleaded guilty in federal court on Monday to stealing checks and credit cards from mail before selling them off or using them to purchase luxury goods, according to prosecutors. 

Mary Ann Magdamit, a 31-year-old Carson resident, faces up to 30 years in federal prison after she pleaded guilty to one count of conspiracy to commit bank fraud, according to a statement from the U.S. Attorney's Office. 

Magdamit, who formerly worked at the main Torrance Post Office, allegedly stole mail containing checks, personal identification information and debit and credit cards. 

Afterward, she would sell the stolen bank-issued cards online, use the cards to make purchases and sell some of the cards to her alleged co-conspirators, prosecutors said. 

She would also arrange to have others cash the stolen checks by using counterfeit identity documents in the name of the person listed on the check, according to the DOJ's statement. 

During a search of her apartment in December 2024, authorities found and seized more than 130 stolen credit and debit cards, 16 checks from the U.S. Department of Treasury, and a loaded, unserialized Glock firearm clone with a 27-round magazine. Authorities said the weapon was a ghost gun. 

Federal agents also discovered luxury goods, which they say Magdamit purchased with stolen cards. Court records allege that she also used stolen cards to book international trips to Aruba and Turks and Caicos. 

Magdamit was arrested on July 1. Authorities say that, at the time of her arrest, she was still making purchases with cards she had stolen. During a second search of her residence, law enforcement found more stolen cards. 

Prosecutors said that, over the course of three years when Magdamit is alleged to have committed the crimes, she flaunted her luxury purchases and vacations on social media. Some photos show Magdamit holding large stacks of money. 

Magdamit agreed to forfeit some luxury goods, including a Rolex watch, the DOJ release said.