Watkins, 48, was pronounced dead after an alleged assault at HMP Wakefield on Saturday morning.
Rashid Gedel, 25, and Samuel Dodsworth, 43, are due to appear at Leeds Magistrates’ Court later today, West Yorkshire Police said.
This breaking news story is being updated and more details will be published shortly.
Please refresh the page for the fullest version.
You can receive Breaking News alerts on a smartphone or tablet via the Sky News App. You can also follow @SkyNews on X or subscribe to our YouTube channel to keep up with the latest news.
