They are both charged under Florida criminal statute 782.04(1a2).
"782.04 Murder.
(1)(a) The unlawful killing of a human being:
1. When perpetrated from a premeditated design to effect the death of the person killed or any human being;
2. When committed by a person engaged in the perpetration of, or in the attempt to perpetrate, any:
a. Trafficking offense prohibited by s. 893.135(1),
b. Arson,
c. Sexual battery,
d. Robbery,
e. Burglary,
f. Kidnapping,
g. Escape,
h. Aggravated child abuse,
i. Aggravated abuse of an elderly person or disabled adult,
j. Aircraft piracy,
k. Unlawful throwing, placing, or discharging of a destructive device or bomb,
l. Carjacking,
m. Home-invasion robbery,
n. Aggravated stalking,
o. Murder of another human being,
p. Resisting an officer with violence to his or her person,
q. Aggravated fleeing or eluding with serious bodily injury or death,
r. Felony that is an act of terrorism or is in furtherance of an act of terrorism; or"
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