From grass fires to structure fires, police say someone is intentionally setting them across the city of Wausau.
The first one was reported June 24th, the most recent on Tuesday.
Police are interviewing people they believe may have community to help solve the arsons.
The first fire was in late June followed by four grass fires in July all on the same day on Wausau's east side.
The arsonist has gotten progressively worse, soon targeting abandoned buildings and cars.
Chief Jeff Hardel says it's likely whoever set one fire, set the rest.
"A couple of the fires we know that there was accelerants used, at one location there was a gas can left at the scene, another fire we know that there was accelerant on the ground," he said.
Hardel says though there were some similarities between the fires, each had different factors, and although arson is not uncommon in the city what makes this case unique is how many fires there were in such a short period of time.
Fortunately, nobody has been hurt in any of the fires, and nobody's home has been targeted.
But Hardel says many times with arsonists, they gain confidence over time and tend to test what they can get away with, often putting more people in danger.
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