Bowden had been feeling poorly in recent weeks and had been visiting doctors, who were trying to get to the bottom of what ailed him, according to Pima County Supervisor Ray Carroll, a good friend of Bowden.
Bowden laid down for a nap and passed in his sleep, according to Carroll.
He was 69.
Bowden, a onetime Tucson Citizen reporter, was a hard-edged author whose first books pioneered a sort of environmental noir style but in recent years, he had focused on the dark underbelly of the drug war.
We'd say RIP, but we have a a feeling that wherever Chuck is, he's already raising hell.
More details to follow as we get them.