Justin Bieber had drugs and drug paraphernalia strewn all over his house when it was raided last week ... but drugs were not on deputies' radar, an online source said. Sources familiar with the situation said when L.A. County Sheriff's deputies searched the house, there were 2 large cookie jars filled with weed in plain view. There were also 4 - 5 empty codeine bottles in the mansion. As for why cops didn't seize any of these items? ... law enforcement sources say they were not on the hunt for drugs -- they were primarily looking for video equipment that may have been attached to surveillance cameras. Also, cops were unable to pry open jars and such, because it would have exceeded the scope of the search warrant.