LOUISVILLE, Ky. (WDRB) -- Louisville native and boxing great Muhammad Ali is mourning Prince's death.

In a tweet he says, "We've lost a true original. Prince was a such a good person and friend - someone who cared for others and used his genius to help many."

A couple hours later, he tweeted a picture with the caption, "You will be missed my friend."

Prince died unexpectedly in his Minnesota home Thursday. 

A cause of death has not yet been officially determined. An autopsy is schedule for Friday. 

Prince was 57 years old. 

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