Prosecutors say murder suspect who gunned down six members of ex-wife’s family was fueled by revenge — not insanity

Prosecutors have waved off the claims of a murder suspect who said he was insane when he fatally gunned down six of his ex-wife’s family members in 2014, arguing that he was instead motivated by a desire for revenge.

Attorney Samantha Knecht on Wednesday told jurors Ronald Lee Haskell had been...