The Marshalltown Fire and Police Departments have announced there has been a significant break in the investigation of the recent fires. The two departments will be holding a joint news conference at 2:30 p.m. today in the Marshalltown City Council Chambers. No further information will be available until the news conference.
Check back with the Times-Republican online at 2:30 for more on this story as it's reported live from the news conference.