NORMAN, Okla. (AP) — Consumer products giant Johnson & Johnson was a "kingpin" company that helped fuel the most devastating public health crisis in Oklahoma history, the state attorney general argued Monday during the close of his case against the opioid drug manufacturer.

Attorneys for the state maintain the company and its subsidiaries created a public nuisance by launching a "cunning, cynical and deceitful" marketing campaign that overstated the benefits of opioid drugs for treating chronic pain and understated the risk of addiction.

"There was a simple reason for the crisis: greed," Hunte...