Authorities are investigating after a mail carrier was robbed of her master key Thursday at an apartment complex in North Miami.
The robbery happened around 11 a.m. at the building at 127 Northeast 10th Avenue as the letter carrier was delivering mail.
The woman was approached by two men who demanded the key and fled the scene. The letter carrier was shaken up but not physically injured, officials said.
Thieves use the keys to sell them to criminals who look for mail with credit card offers, or they have already applied for credit cards and try to intercept them at the addresses, officials said.
"What they want is to have access to that mail that they have stolen or acquired, they will mail it to an abandoned house, apartment and have some type of control over it," Postal Inspector Ivan Ramirez said. "On this situation unfortunately they got access to a device so they can monitor what kind of mail comes to this address."
The postal service is offering up to $15,000 reward for any information that leads to an arrest.
Detectives handed out flyers in the area of the robbery Friday in the hopes of finding the suspects. Anyone with information is asked to call Miami-Dade Crime Stoppers at 305-471-TIPS.