A Sacramento police sergeant is on paid administrative leave after being arrested on suspicion of petty theft last week, according to authorities. Sgt. John Castiglia, who is assigned to investigations, was placed on leave last Friday after Roseville authorities notified Sacramento police officials of the arrest, said Sgt. Norm Leong. Castiglia, a 48-year-old Rocklin resident, is accused of shoplifting "a couple of toiletry items" from a Roseville grocery store on May 28, said Roseville police spokeswoman Dee Dee Gunther. Loss prevention officers at the grocery store called police after detaining Castiglia for allegedly taking the items out of the store without paying for them, Gunther said.