Of the seven people detained, three were motorists who Glendale police said were allegedly driving under the influence of drugs and alcohol. Two motorists were allegedly drunk driving.
Police stopped 33 vehicles and oversaw 18 field sobriety tests during the citywide operation.
At a similar DUI operation on March 17, police arrested three motorists for alleged drunk- and drugged-driving violations.
Police patrolled neighborhoods with the most frequent and highest number of DUI collisions and arrests.
Body of man found in suitcase still not identified, investigators say