§ 150.10 Arson in the third degree.

1. A person is guilty of arson in the third degree when he
intentionally damages a building or motor vehicle by starting a fire or
causing an explosion.

2. In any prosecution under this section, it is an affirmative defense
that (a) no person other than the defendant had a possessory or
proprietary interest in the building or motor vehicle, or if other
persons had such interests, all of them consented to the defendant's
conduct, and (b) the defendant's sole intent was to destroy or damage
the building or motor vehicle for a lawful and proper purpose, and (c)
the defendant had no reasonable ground to believe that his conduct might
endanger the life or safety of another person or damage another building
or motor vehicle.

Arson in the third degree is a class C felony.