(CNN) When two of his close friends died in October, YNW Melly, a rising Florida rapper, mourned the loss of his "brothers" in an Instagram post full of breaking heart emojis.

"They Took My Brothers From Me Over Jealousy," he wrote. "I know y'all watching over me."

But on Wednesday, police arrested YNW Melly and another man and charged them with two counts of murder. Police said YNW Melly fatally shot his friends and then staged the crime scene to look like a drive-by shooting.

The arrest of YNW Melly, whose legal name is Jamell Demons, delivers a halt to what had been an up-and-coming career.

The 19-year-old had just begun a concert tour across the country, and his Instagram was full of the trappings of hip-hop stardom: stacks of cash, diamond jewelry and a gold grill covering his smiling teeth.

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