Book climbs bestseller list after title was apparently cited on bullet casings at scene of CEO’s death

Shell casings found at the scene of Brian Thompson’s killing had the words ‘depose’, ‘deny’ and ‘defend’ written on them, echoing the book’s title. Photograph: Shannon Stapleton/Reuters

The book criticizing the US healthcare insurance industry whose title resembles words etched on to shell casings found at the scene of the murder of the UnitedHealthcare CEO Brian Thompson last week has soared towards the top of the Amazon bestseller list.

Delay, Deny, Defend: Why Insurance Companies Don’t Pay Claims and What You Can Do About It, is now No 3 on the site’s nonfiction bestseller list. On Tuesday, it reached No 2, CNN noted.