Authorities say a mail carrier in New Jersey intercepted packages of cocaine from Puerto Rico and put it on the streets.
Christina Nunez is slated to make an initial appearance in federal court in Newark Tuesday. The 30-year-old from Lyndhurst is charged with conspiracy with intent to distribute cocaine and mail theft.
Her boyfriend also has been arrested and charged.
Federal prosecutors say Nunez has been receiving packages of cocaine that were sent to addresses along her route or to her home since December 2010.
Prosecutors say she would pass the drug on to co-conspirators in Camden.
It's not clear if Nunez has hired a lawyer.