CATAWISSA, Mo. (AP) — Authorities in eastern Missouri’s Franklin County are investigating an explosion that heavily damaged a vacant cabin.

Sheriff Gary Toelke says no one was injured during the blast about 7 p.m. Sunday near Catawissa.

Toelke says authorities don’t yet know what caused the explosion.

But he says searchers of the damaged cabin found an explosive called Tannerite, a material that can be bought at sporting goods stores for target practice.

Toelke says the owner of the cabin, a Robertsville man, later was arrested after deputies with a search warrant for his home were denied access by him. The sheriff says suspected methamphetamine, other explosive materials and weapons were found there.