Authorities say several people Friday were arrested on suspicion of illegally selling nitrous oxide for recreational use.
Officers with the Los Angeles Police Department took part in a massive series of raids on Thursday involving alleged prescription drug sales by a multi-state criminal operation.
Authorities on Thursday warned medical marijuana dispensary owners in Long Beach to close up shop voluntarily or face being shut down by police.
A multi-city raid on members of a South Los Angeles graffiti crew ended in nearly a dozen arrests on Wednesday.
Members of the Vagos motorcycle gang say authorities have harassed them, including intimidation of family members and being denied service at local restaurants.