Look at the example: 

> *Il **n**'a **rien** mangé* - He has eaten nothing.

From [*Collins Easy Learning French Grammar*][1]

The indefinite pronoun ***rien*** was placed according to the French usual pronoun placement — before the verb. I have seen other examples with ***tout*** being placed likewise; I can't recall one now though.
Does this placement apply to any other indefinite pronoun such as *personne, quelque chose, quelqu'une*...?


  [1]: https://grammar.collinsdictionary.com/french-easy-learning/what-are-the-indefinite-pronouns-in-french