Wow. Horrible. RIP to this little baby.
As for the "man", he needs to have his genitals ripped off by rabid dogs and fed the remains mixed with his own feces. Then he needs to he raped by the most brutal and sadistic of prisoners with acid and salt poured into the wounds. He should be starved then force fed water to the point of water intoxication then thrown in a tub of hot tar and set on fire.