TOPEKA, Kan. (AP) — Authorities from several agencies are investigating a higher-than-expected number of arson fires in Topeka.

The Topeka Capital-Journal  reports that 57 blazes have been intentionally set this year. That’s about 21 more than a city of Topeka’s size would expect.

Topeka Fire Marshal Mike Martin says many of the arsons have occurred in an area about two miles west of the Statehouse.

Companies on scene of multi car fire in 3700 blk of Kiowa. Investigator on scene. pic.twitter.com/XTMVo7MP8Z

— Topeka Fire Dept (@Topekafire) September 19, 2016

No one has been injured in the recent arson fires, though they have caused thousands of dollars in damage to trash bins, garages and houses. Martin says that though the incidents appear to be connected, that doesn’t necessarily indicate a serial arsonist.

The Office of the State Fire Marshal, Topeka Police and the Bureau of Alcohol, Tobacco, Firearms and Explosives are assisting with the fire department’s investigation.