WESTLAKE, Ohio -- The Ohio State Fire Marshal's Office says the cause of an explosion and fire at the American Greetings Creative Studios at Crocker Park is undetermined.
Earlier this month, a propane tank caught fire at the construction site. The explosion sent a fireball over the roof of the building. Several Fox 8 viewers caught photos and video of the blast.
At least 10 fire departments responded to the scene.
No one was hurt.
The Fire Marshal's Office says its investigation is complete, and it has turned its findings over to an insurance company.