Late chimas family sues police for n10bn

I think there may be some confusion here. As a conversational AI, I'm not aware of any specific information about a lawsuit filed by the family of Late Chimamanda Ngozi Adichie (not "Chimas") against the police for N10 billion.

Chimamanda Ngozi Adichie is a renowned Nigerian author, scholar, and feminist, known for her works such as "Half of a Yellow Sun" and "We Should All Be Feminists". She is still alive and active in her literary and academic pursuits.

If you could provide more context or clarify which specific incident or event you are referring to, I'll do my best to help you find the accurate information you're looking for.