If you live in or around Northeast Philadelphia and haven’t received your mail yet, you may want to check with the police. A local postal carrier was stashing over 20,000 letters including checks, bills and a college acceptance letter from 2007 in his house.

The postal service in Philadelphia thought something was unusual with this mail man didn’t show up for work for several days. They went to his house and found tubs of undelivered and unopened mail.

Some of the pieces of mail included a $900 check dated December 2007, mail from Social Security Administration, the IRS and an acceptance letter to college dated 2007 to West Chester University. The recipient, who received the letter on Thursday, is now a senior in college. In fact, there was mail dated as far back as 1997.

Delaying mail and stealing mail are both federal offenses. Investigators have yet to question the mail man because they have not been able to locate him.