Chris Brown's Mom -- Home Invasion Robbery Was an Inside Job

Chris Brown knows exactly who's behind the home invasion robbery because it was one of his homies -- at least according to Chris' mother. Sources close to Chris tell TMZ his mom, Joyce Hawkins , has been warning him for years about people she calls "no good-ass friends" -- grown men who make their living as professional hangers-on to Chris. TMZ was told the "friends" issue is part of the reason Chris and his mother have been beefing for years.