UPDATE (2:30 p.m. ET:) Bieber's live-in sidekick Lil' Za has been arrested in the raid, for drug possession.
Justin Bieber has nowhere to run -- since cops have just raided his house with a search warrant, and a battering ram to back it up!
Stuff got real for the Bieb this morning when 11 cars packed with L.A. Sheriff's personnel swarmed his mansion with a felony warrant, looking for evidence in the egging of his neighbor's house. Though they're looking for a link to the vandalism, which is a felony in its own right, the warrant extends to anything illegal -- including drugs.
And just in case Bieber and his pals are uncooperative, the officers have brought along a battering ram to knock down doors that might otherwise be locked.