The Dolphins' locker-room scandal could have league-wide ramifications and result in changes to the NFL code of conduct for players.
"We all have to get back to respect," Commissioner Roger Goodell told reporters Friday in New York.
Goodell didn't say anything else about the NFL investigation into whether Richie Incognito and other Dolphins harassed teammate Jonathan Martin.
But Incognito's camp tried to discredit Martin on Friday, releasing transcripts of text messages between the offensive linemen with references to drug use.
According to the texts released to the CBS affiliate in Miami, Martin and Incognito in July talked about using "Molly," a street name for MDMA, also known an Ecstasy.
On Aug. 31, a week before the season started, Incognito, according to the texts, tried to persuade Martin to leave his house so they could meet up with women. Martin texted that "my friend Mary Jane has me glued to the couch." Incognito called Martin an "(expletive) stoner."
The messages also mentioned Dolphins center Mike Pouncey.
In September, Incognito asked, "did u go to Pouncey's after? I'll kill u if u did."
Martin responded, "Lol hell no. No drugs for me rest of season."
Dolphins officials declined to comment. A representative of Pouncey's did not immediately respond for comment.
Incognito has had his own substance issues. In 2012, he was investigated by police for allegedly molesting a woman with a golf club at a Dolphins charity golf tournament. The police report said Incognito was drunk at the time. He reportedly settled out of court with the woman.
Dolphins offensive tackle Tyson Clabo said last season that alcohol might have played a part in Incognito sending a racially charged voicemail to Martin. Incognito and other teammates have said that racial slurs weren't meant to be taken seriously and were part of the current NFL culture.
Mark Schamel, Incognito's attorney, released text messages Thursday that showed Martin threatening to rape Incognito and kill his family. The attorney said that Incognito did not take these comments seriously and that they were "banter" among friends.
Martin left the team three months ago and later alleged harassment by teammates. Incognito was suspended for the second half of the season.
The story resurfaced this week after Martin was interviewed on NBC.
After the Super Bowl, the NFL will release the findings of its investigation into the scandal. The NFL Players Association is conducting its own investigation.
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