Fireworks are being set off in mailboxes

Fireworks are being set off in mailboxes »Play Video
A mailbox in Hazel Dell that was damaged (KATU photo).

CLARK COUNTY, Wash. - Mailboxes are exploding in Clark County and investigators believe the cases are connected.

Police say someone has been putting fireworks in mailboxes this past week.

Two community mailboxes - one in Hazel Dell and another in Felida - were damaged and a third one was hit at Sunset Elementary School.

Anyone with information on the arsons is asked to call the Clark County Sheriff's Office.