Rapper Machine Gun Kelly was kicked out of a concert in Los Angeles on Sunday (19Aug12) after a mystery backstage bust-up.
The hip-hop star, real name Richard Baker, performed at the Rock the Bells festival in the San Bernardino area of the city but was later ejected from the venue by police after becoming involved in an incident, according to Tmz.com.
Taking to his Twitter.com page, he writes, "Just got kicked out of Rock The Bells by some cops on horses... you've gotta (sic) be f**kin (sic) kidding me."
A Rock the Bells spokesman tells Tmz the rapper was ejected from the event over an "action that happened backstage".