Investigators say Marquez claimed the shooting was self-defense and that he only intended to shoot his brother in the leg after his brother assaulted him during a fight. Instead, Marquez shot his brother in the stomach.
Bad decision. The brother died.
Marquez was arrested and booked into jail. He is accused of multiple charges, including second-degree murder.
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tacticalprofessor 
I can’t think of any situation that would leave me wanting to shoot my brother anywhere. YMMV.
Without reading the piece, I’m going to guess one or both had been in trouble and inside before.
My only hope is that neither of them have bred, but it’s probably unlikely. Future cops can deal with that.