LOS ANGELES: Detectives searching pop singer Justin Bieber’s Los Angeles mansion over an egg-throwing attack seized illegal drugs and arrested one of the singer’s associates on Tuesday (Wednesday in Manila), officials said. Los Angeles Sheriff’s Department officer Dave Thompson said an individual was arrested after the drugs were discovered in “plain view” as deputies combed through Bieber’s luxury home in the upmarket enclave of Calabasas. Around a dozen detectives swooped on the 19-year-old star’s home on Tuesday, probing allegations that the Canadian teen idol was responsible for causing thousands of dollars in damage to a neighbor’s house after pelting it with eggs. Thompson said an investigation into a “felony crime” was ongoing, with the neighbor claiming as much as $20,000 in damage was caused. Celebrity news website TMZ, which generally has solid sources, said the man arrested was rapper Lil Za, one of Bieber’s close friends.