Section 569.040 - Arson in the first degree - penalty1. A person commits the offense of arson in the first degree if he or she:(1) Knowingly damages a building or inhabitable structure, and when any person is then present or in near proximity thereto, by starting a fire or causing an explosion and thereby recklessly places such person in danger of death or serious physical injury; or(2) By starting a fire or explosion, damages a building or inhabitable structure in an attempt to produce methamphetamine.2. The offense of arson in the first degree is a class B felony unless a person has suffered serious physical injury or has died as a result of the fire or explosion set by the person or as a result of a fire or explosion started in an attempt by the person to produce methamphetamine, in which case arson in the first degree is a class A felony.Amended by 2014 Mo. Laws, SB 491,s A, eff. 1/1/2017.L. 1977 S.B. 60, A.L. 1987 H.B. 57, A.L. 2005H.B. 353