Terrible news all around on this one.
https://www.cbssports.com/nfl/news/raiders-henry-ruggs-iii-involved-in-fatal-car-accident-to-be-charged-with-dui-resulting-in-death/
I found this elsewhere and it looks like, if convicted, he'll be facing a sentence of between 2 and 20 years and no opportunity to plea it down.