Cops descended on Justin Bieber's house some minutes ago

Deputies are detaining Justin in his garage right now while they search.They are also looking for surveillance video from Justin's house that might capture the egging incident.

Eleven L.A. County Sheriff's patrol cars descended on Justin Bieber's house a few minutes ago and they are executing a search warrant in connection with the egg-throwing incident ...

Sources say ... deputies are looking for any evidence that links Bieber to the egg assault on his next door neighbor.

This is a FELONY search warrant -- meaning Justin is under a microscope for a crime that could land him in prison.