A third suspect was arraigned in connection to last week's suspected arsons in Mecosta and Montcalm Counties.

20-year old Derek Austin Keeler of Sparta was charged with three counts of third-degree arson. If convicted, he faces up to a decade behind bars.

Keeler's co defendants 18-year old Jacquelynn Mae Harris,of Morley, and 32-year old Theodore Cosnowski III, of Howard City, all face the same charges in connection to allegedly setting fires to three different structures around Mecosta County's Deerfield Township as well as an area in Montcalm County.