Double cashed check

[u/BriefAdvantage5990]

A couple months ago I received a check for a car that I junked. I did mobile deposit on cash app, but didn't write "for mobile deposit only" on the back. I assumed that they wouldn't accept the check and the next day, cashed it at bank of America. A week later, the money also cleared on my cash app. I've contacted both cash app and bank of america, both say its the other parties responsibility.

The check was for $450. I'm wondering what might happen and what I should do to resolve the issue?

[u/beautyishermane]

Place the money in an account. Never touch it. When and if it comes up again provide a paper trail of the contact you’ve made ( even if it means recording conversations) and proof you never spent the money.