CHICAGO (CBS) – For weeks, there were constant ripoffs from mailboxes in the West Loop.

Residents just couldn’t figure out how thieves were getting in.

Now, a woman is behind bars, facing federal charges. Thanks to a traffic stop by Chicago police, CBS 2’s Jermont Terry reports.

For those living in the West Loop the arrest is a great start. However, the looming question: who else was in on this crime spree.

It’s not that simple for people in this neighborhood to get mail, especially with thieves gaining access to secure buildings by using a U.S. postal worker master key.

Source: Police Arrest Woman With Stolen Mail, Five Postal Keys In Car – CBS Chicago

Postal Workers Worried About Safety As Mail Thefts Are On The Rise