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Input: The Associated Press has obtained  a letter sent by the NFL to Jerry Jones' attorney accusing the Dallas Cowboys owner of "conduct detrimental to the league's best interests" over his objection to a contract extension for Commissioner Roger Goodell .
 The letter accusing Jones of sabotaging the negotiations  was sent to David Boies on Wednesday.  Jones  hired Boies and threatened to sue the NFL if Goodell's contract extension was approved by the compensation committee  made up of six owners. All 32 owners voted unanimously in May to let the committee finalize a deal with Goodell.
It's the latest escalation of a feud between the NFL and one of its most powerful owners.  Jones  has denied that  his  objections to the extension are tied to Goodell's decision to suspend star running back Ezekiel Elliott for six games over alleged domestic violence.
 Jones  has said  he  has issues with compensation in the deal  along with concerns about the escalation of player protests involving the national anthem and how the league has handled them.  He  also has suggested that owners should revisit the power that the position wields.
The letter confirmed that  Jones  was removed as a non-voting member of the compensation committee after threatening to sue.
 Jones  who was inducted into the Pro Football Hall of Fame in August   was accused of sharing with all the owners an outdated document related to the negotiations with Goodell.
"Someone who is genuinely concerned 'that the owners know the truth about the negotiations' would not deliberately distribute such an outdated document  particularly when  he  has in  his  possession drafts that are current and accurately reflect the actual state of negotiations  or threaten to sue the league and its owners if  he  does not get  his  way " the letter said.
 Jones  has acknowledged being at odds with the compensation committee chairman  Atlanta owner Arthur Blank  over the Goodell talks. They didn't speak on the field before the Falcons' 27-7 victory over the Cowboys on Sunday.
A spokesman for  Jones  didn't immediately respond to a request for comment.
 Jones  claimed Tuesday on  his  radio show that "well over half" the owners agree with  him  in wanting a final vote after the committee is finished negotiating the deal.
"With due respect  we urge  Mr. Jones  to drop  his  misguided litigation threats and media campaign to undermine the committee's mandate " the letter said. "And we urge  Mr. Jones  to support the committee's deliberations  not attempt to sabotage them."

Feud grows between NFL Cowboys' Jerry Jones over Goodell