Bucy suffered facial fractures and received stitches at a local hospital, according to the affidavit. It also says Bucy was referred to a plastic surgeon.
Speck Mellencamp told officers he had been at a party at Bucy's home earlier when two girls began fighting over him, and that a white male punched him as he tried to halt the girls' fight. Mellencamp said his assailant ran into the house.
He said he "was very upset about being punched" but soon left and went home, where he, his brother and Smith decided to return.
Hud and Speck Mellencamp are the sons of John Mellencamp — whose hits include "Hurts So Good" and "Pink Houses" — and his third wife, model Elaine Irwin. The couple divorced in 2011 after 19 years of marriage.