The four teens charged for blowing up mailboxes in Jackson County are due in court Monday.

It'll be an initial appearance Jackson County Circuit Court for the teens, who were charged in April.

The sheriff's office has said that investigators found that one teen learned over the Internet how to make explosive devices, and the group made four of them that were then set off. Three destroyed mailboxes and the other a traffic sign

Two of the teens, one from Melrose and one from Mindoro, were jailed on felony charges of possession of explosives and damage to property by explosives.

The other two, one from Melrose and one from Mindoro, were released on signature bonds after being charged with misdemeanors of being party to criminal damage to property.

(Copyright 2008 by The Associated Press. All Rights Reserved.)