How would money laundering work through a nonprofit? (Research for a novel!!!!)

Hi there,

I’m a published author doing some research on nonprofit fraud for a new novel. I know that this question sounds suspicious but I promise it’s just for fiction lol. I also work at a nonprofit myself but am rather new to the world of it.

So, I’m wondering how in theory someone could launder money through a nonprofit? Say like for a drug operation or something.

This sounds more suspicious as I go along so I’m gonna stop there lol. But any insider logistics for how this could work would be of big help.