FOND DU LAC - Investigators believe someone intentionally started a Fond du Lac apartment building on fire last week.
Police said Thursday a 27-year-old Fond du Lac man was arrested in the case. He allegedly had an argument at a bar with a woman who lived in one of the apartment. Police say the man left the bar, broke into her apartment and set it on fire.
Police credit the joint task force from the Fond du Lac police and fire departments, along with the state Department of Justice for quickly solving the case.
"Those investigators did a good job of going through all the evidence, gathering statements, finding out what started that fire and who started that fire," said Fond du Lac Police Department Assistant Chief Steve Klein.
The suspect has not been charged.
No one was hurt, but the fire damaged four units in the building.