PLAINFIELD TOWNSHIP, Mich. (AP) - Authorities say arson is suspected in fires found burning at a church in southwestern Michigan. The Kent County sheriff's office says officers responded Monday to Northview Community of Christ Church in Plainfield Township. A passer-by reported smoke coming from the Grand Rapids-area church. The township fire department says three fires were found in different places of the church, including the sanctuary area. No injuries were reported, but the sheriff's office said in a statement there was "considerable damage." Anyone with information is asked to contact investigators. Michigan State Police and the federal Bureau of Alcohol, Tobacco, Firearms and Explosives are involved in the investigation.