On Sunday 21 December I received the following e-mail from one of our neighbors:

Thanks for your email on mail tampering. It appears that someone went through all the Sunrise Terrace additions after Saturday’s mail delivery. Today, My husband and I were out walking and found mail from 5 households. Most of the mail had already been opened and tossed in the street,
We found mail along Military that belonged to a house just below 138th St. We also found mail scattered along the streets in the 5th addition (south side of 122nd) that belonged to 3 houses near the intersection of 136th and 122nd. We also found mail on Shawnee Rd that belonged to a house on 136th Ave.
We returned everything we found and noticed that the homes did not have locking boxes, with the exception of one. Thanks for getting the word out. My hope is that the more locking boxes we have the less tempting our neighborhood will be.