"We did receive the case from the LAPD. It's currently under review from our office. We will be making a final decision soon but there's no timetable at this point," City Attorney Mike Feuer's office told ABC News on Monday.
If a charge is filed, it would be a misdemeanor, likely with a six-month sentence.
Mathers admitted to posting a picture of a naked woman in a locker room at an LA Fitness gym with the caption: "If I can't unsee this then you can't either."
The woman, described by authorities as being in her 70s, has not been publicly identified, and it is not clear if she knew she was being photographed by Mathers at the time.
The 29-year-old 2015 Playboy playmate of the year later apologized, saying the post was meant to be a private message.
"I just wanted to acknowledge a photo I accidentally posted here on Snapchat earlier today and let you know guys know that was absolutely wrong and not what I meant to do," she said in a video posted to Snapchat. "I know that body-shaming is wrong. That is not the type of person I am."
Mathers also apologized on Twitter.
"I'm sorry for what I did," she wrote in a tweet on July 14. "I need to take some time to myself now to reflect on why I did this horrible thing. Goodnight."
I'm sorry for what I did... I need to take some time to myself now to reflect on why I did this horrible thing. Goodnight.— Dani Mathers (@DaniMathers) July 14, 2016
Even after the apologies, Mathers has faced widespread criticism for sharing the picture and body-shaming the woman.
Mathers deleted the controversial image from Snapchat and has since set some of her social media accounts to private.
The LAPD opened an investigation into the incident after receiving a report of "illegal distribution," of the image, Capt. Andrew Neiman said.
LA Fitness reported the original Snapchat post to police, and authorities have been investigating the incident, which took place at the health club chain's branch in the Playa Vista area.
Mathers' membership has been revoked, Jill Greuling, LA Fitness' executive vice president of operations, told ABC News in an email.
The company posted a statement on Twitter when the incident made headlines this summer, calling Mathers' behavior "appalling."
Her behavior is appalling & puts members @ risk. We ended membership & she can't use any club. It’s not just our rule, it's common decency.— LA Fitness (@LAFitness) July 15, 2016
ABC News and the Associated Press contributed to this report.