killers and down playing the fact they had a high likelihood of leading to addiction. many states grapple with how to deal with the huge expense and the human cost of the epidemic. more than 42,000 people overdosed on opioids in 2016. the main culprits were prescription pain killers like oxycontin. 16 other states have filed lawsuits against purdue. they hope to resolve the state's concerns without heading to court. a deadly explosion in a california facility being investigated as criminal act. the incident appears to be intentional although it is early in the investigation. one woman was killed, three others injured in the blast in aliso viejo. that's in southern orange county. the explosion blew out walls and windows and a witness say it felt like an earthquake with fire and smoke popping out of the walls. checking out some sports, a big night for lebron james but it's the boston celtics who are once again celebrating.