He dumped the mail in a dumpster, but the U.S. Postal Service says 90 percent of the mailman's illegal delivery is at its final destination.
The rest will get there later this week.
The retrieved mail was being held as evidence in the investigation.
A few weeks ago, a passerby noticed the mail worker throwing more than 500 pieces of mail into the trash.
The postal worker has since been fired.
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