OMAHA, Neb. (AP) — An author who unsuccessfully sued the state for access to a serial killer’s prison drawings has published the artwork of John Joubert in a new book.

The Nebraska Supreme Court refused last year to release the drawings Joubert made before his execution in 1996.

Author Mark Pettit said Monday that a source provided him a copy of the drawings while his case was pending, but he waited to publish them until after Nebraskans voted to reinstate the death penalty this fall.

Pettit is a former Omaha reporter who had previously written a book about Joubert and his crimes.

Joubert was convicted of fatally stabbing two Bellevue-area boys, ages 12 and 13, weeks apart in 1983. He was also convicted of killing an 11-year-old boy in Maine in 1982.