Lamar County Deputies are investigating a recent increase in crimes involving mail theft. These thefts involve personal checks taken from mailboxes. Victims of these crimes have placed personal bank checks in their mailboxes for bill payment purposes and have raised flags on mailboxes to indicate outgoing mail. These personal checks are then changed and possibly duplicated for criminal purposes. It is when suspects act and steal outgoing mail. These suspects will also steal mail as soon as its delivered and use the identifying information for criminal purposes.