Ohio Rev. Code § 2909.02: Aggravated arson.

(A) No person, by means of fire or explosion, shall knowingly do any of the following:

(1) Create a substantial risk of serious physical harm to any person other than the offender;

(2) Cause physical harm to any occupied structure;

(3) Create, through the offer or acceptance of an agreement for hire or other consideration, a substantial risk of physical harm to any occupied structure.

(B)(1) Whoever violates this section is guilty of aggravated arson.

(2) A violation of division (A)(1) or (3) of this section is a felony of the first degree.

(3) A violation of division (A)(2) of this section is a felony of the second degree.