The Attorney General of Massachusetts Friday requested the release of more documents from Purdue Pharma, the company that makes OxyContin. Several members of the billionaire family owned by Purdue are accused of marketing the drug, even though they know how addictive it can be.

Anthony LaGreca remembers his son's long struggle with prescription opioids that ended his life in 2014.

"In the end, no one even talked to him except me," LaGreca said.

He added that his son's addiction had started with a single bottle of OxyContin.

"People say that if the drug is used according to the instructions, it abuses the patient because it is the drug that allows him to control his brain," LaGreca said.

A lawsuit in Massachusetts is the first to cite Purdue Pharma owners, including members of the Sackler family, claiming that they were participating in a "deadly and illegal ploy". The prosecution quotes portions of emails and memos newly obtained from Richard Sackler, then president. In one of his writings, the launch of the OxyContin pills would create "a prescription snowstorm that will bury the competition". In another article, Mr. Sackler wrote: "We must attack the aggressors … they are the culprits and the problem."

Massachusetts Attorney General Maura Healey said they knew the drug was addictive, but that greed had pushed them forward.

"They do not want to accept blame for that, they blame doctors, blame prescribers, and worse, they blame patients," Healey said.

In a statement, Purdue calls the Massachusetts lawsuit "rush to vilify the drug maker," and "choose from tens of millions of e-mails and other commercial documents."

As for LaGreca, he has seen enough.

"Honestly, I would like to see Purdue Pharma go bankrupt," he said. "I'd like to see the heirs of the Sackler family put in prison because that's their place."

CBS News contacted the Sackler family members named in the complaint, as well as their lawyer. Three refused to comment by a representative of the press. CBS News has never heard of the rest.

The Sackler family, which maintains links with prestigious institutions, remains silent about accusations of opioid crisis

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