You can see if their case manager or counselor will give them permission - it would require a deputy or sheriff to come to the facility and take down the information. Depending on the circumstances, these are the correct people to determine whether it's going to be allowable.
https://www.inmateaid.com/ask-the-inmate/adelanto-detention-facility-can-a-inmate-make-a-police-report-from-inside-of-the-facility#answer
Accepted Answer Date Created: July 28,2016