The phrase "who's in custody" typically refers to individuals currently held in jail or detention facilities. Various official websites provide searchable databases or lists where you can find information about people in custody, including their booking details, charges, and sometimes bail information. Examples include county sheriff's office inmate locators for places like San Bernardino County, Santa Barbara County, Olmsted County, and others

. These resources are used to identify individuals detained by law enforcement but caution that the information should not be relied upon for legal action and may not always be fully accurate or up to date