Damage was minimal to a facility the Heidelberg University track and field team uses for indoor practice in Tiffin Mall, said coach Ron Martin.
A mat the size of a couch caught fire in the back storeroom, he said.
Martin said the team is not allowed back into the facility due to the ongoing investigation.
“We are unaware of what caused the fire and we have not gotten any indication on how long it is to take,” Martin said.
The team is working outside and throwers are training at the university’s Seiberling Gym.
“Our hope is that they finish up quickly, but we are just going to have to be flexible,” Martin said.