Ezekiel Elliott is trying to overturn his suspension by arguing there was an NFL 'conspiracy' to 'hide critical information'

The NFLPA filed a request on Thursday to block any suspension of Dallas Cowboys running back Ezekiel Elliott, according to reports.

Elliott, who was handed a six-game suspension by the NFL in August for domestic violence allegations, is seeking to have the suspension overturned by claiming there was a "league-wide conspiracy ... to hide critical information" in the league's investigation.

According to ESPN's Adam Schefter and Dan Graziano, Kia Wright Roberts, the NFL's director of investigations, was the only NFL employee to interview Tiffany Thompson, Elliott's accuser. Roberts testified that she would not have recommended discipline against Elliott due to doubts about Thompson's credibility.

However, according to Pro Football Talk's Mike Florio, Roberts was excluded from a June 26 meeting in which investigators presented evidence to four independent outside experts who made recommendations to NFL commissioner Roger Goodell. Roberts was not available to share her recommendation that Elliott not be suspended.

30 PHOTOS
Ezekiel Elliott through his career
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Ezekiel Elliott through his career
COLUMBUS, OH - SEPTEMBER 21: Ezekiel Elliott #15 of the Ohio State Buckeyes runs with the ball against the Florida A&M Rattlers at Ohio Stadium on September 21, 2013 in Columbus, Ohio. (Photo by Jamie Sabau/Getty Images)
COLUMBUS, OH - OCTOBER 18: Ezekiel Elliott #15 of the Ohio State Buckeyes runs with the ball against the Rutgers Scarlet Knights at Ohio Stadium on October 18, 2014 in Columbus, Ohio. (Photo by Jamie Sabau/Getty Images)
EAST LANSING, MI - NOVEMBER 8: Ezekiel Elliott #15 of the Ohio State Buckeyes celebrates after the game against the Michigan State Spartans at Spartan Stadium on November 8, 2014 in East Lansing, Michigan. Ohio State defeated Michigan State 49-37. (Photo by Joe Robbins/Getty Images)
INDIANAPOLIS, IN - DECEMBER 06: Ezekiel Elliott #15 of the Ohio State Buckeyes celebrates after his team defeated the Wisconsin Badgers 59-0 in the Big Ten Championship at Lucas Oil Stadium on December 6, 2014 in Indianapolis, Indiana. (Photo by Joe Robbins/Getty Images)
06 December 2014: Ohio State Buckeyes running back Ezekiel Elliott (15) in action during the NCAA Big 10 Championship football game between the Wisconsin Badgers and Ohio State Buckeyes at Lucas Oil Stadium in Indianapolis, IN. (Photo by Robin Alam/Icon Sportswire/Corbis via Getty Images)
January 1, 2015: Ohio State Buckeyes running back Ezekiel Elliott (15) and Ohio State Buckeyes linebacker Darron Lee (43) kiss their MVP trophies as they are carted off the field following the Ohio State Buckeyes game versus the Alabama Crimson Tide in their College Football Playoff Semifinal played in the Allstate Sugar Bowl at the Mercedes-Benz Superdome in New Orleans, LA. The Ohio State Buckeyes won 42-35. (Photo by Todd Kirkland/Icon Sportswire/Corbis via Getty Images)
ARLINGTON, TX - JANUARY 12: Running back Ezekiel Elliott #15 of the Ohio State Buckeyes celebrates after scoring a 33 yard touchdown in the first quarter against the Oregon Ducks during the College Football Playoff National Championship Game at AT&T Stadium on January 12, 2015 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)
DALLAS, TX - JANUARY 10: Ezekiel Elliott #15 of the Ohio State Buckeyes talks with media during Media Day for the College Football Playoff National Championship at Dallas Convention Center on January 10, 2015 in Dallas, Texas. (Photo by Ronald Martinez/Getty Images)
ARLINGTON, TX - JANUARY 12: Running back Ezekiel Elliott #15 of the Ohio State Buckeyes celebrates after defeating the Oregon Ducks 42 to 20 in the College Football Playoff National Championship Game at AT&T Stadium on January 12, 2015 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)
COLUMBUS, OH - SEPTEMBER 26: Ezekiel Elliott #15 of the Ohio State Buckeyes runs with the ball against the Western Michigan Broncos at Ohio Stadium on September 26, 2015 in Columbus, Ohio. (Photo by Jamie Sabau/Getty Images)
September 12 2015: Running back Ezekiel Elliott #15 of the Ohio State Buckeyes greeting fans before the game between the Ohio State Buckeyes and the Hawaii Warriors at the Ohio Stadium in Columbus, Ohio (Photo by Jason Mowry/Icon Sportswire/Corbis via Getty Images)
24 OCFT 2015: Ohio State Buckeyes running back Ezekiel Elliott (15) prior to the game between the Rutgers Scarlet Knights and the Ohio State Buckeyes played at High Point Solutions Stadium,Piscataway,NJ, (Photo by Rich Graessle/Icon Sportswire) (Photo by Rich Graessle/Icon Sportswire/Corbis via Getty Images)
14 November 2015: Ohio State Buckeyes running back Ezekiel Elliott (15) in action during a Big Ten football game between the Illinois Fighting Illini and the Ohio State Buckeyes at Memorial Stadium, in Champaign, IL. (Photo by Robin Alam/Icon Sportswire) (Photo by Robin Alam/Icon Sportswire/Corbis via Getty Images)
GLENDALE, AZ - JANUARY 01: Ezekiel Elliott #15 of the Ohio State Buckeyes kisses the championship trophy after a 44-28 win against the Notre Dame Fighting Irish during the BattleFrog Fiesta Bowl at the University of Phoenix Stadium on January 1, 2016 in Glendale, Arizona. (Photo by Norm Hall/Getty Images)
CHICAGO, IL - APRIL 28: Ezekiel Elliott of Ohio State holds up a jersey after being picked #4 overall by the Dallas Cowboys during the first round of the 2016 NFL Draft at the Auditorium Theatre of Roosevelt University on April 28, 2016 in Chicago, Illinois. (Photo by Jon Durr/Getty Images)
ARLINGTON, TX - SEPTEMBER 25: Ezekiel Elliott #21 of the Dallas Cowboys celebrates after Alfred Morris #46 of the Dallas Cowboys scored against the Chicago Bears in the second quarter at AT&T Stadium on September 25, 2016 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)
Dallas Cowboys running back Ezekiel Elliott (21) celebrates his third quarter touchdown as the Dallas Cowboys beat the San Francisco 49ers 24-17 on Sunday, Oct. 2, 2016 at Levi's Stadium in Santa Clara, Calif. (Max Faulkner/Fort Worth Star-Telegram/TNS via Getty Images)
GREEN BAY, WI - OCTOBER 16: Ezekiel Elliott #21 of the Dallas Cowboys runs with the ball in the fourth quarter against the Green Bay Packers at Lambeau Field on October 16, 2016 in Green Bay, Wisconsin. (Photo by Dylan Buell/Getty Images)
DALLAS, TX - OCTOBER 28: Dallas Cowboy, Ezekiel Elliott attends the Houston Rockets game against the Dallas Mavericks on October 28, 2016 at the American Airlines Center in Dallas, Texas. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. Mandatory Copyright Notice: Copyright 2016 NBAE (Photo by Glenn James/NBAE via Getty Images)
ARLINGTON, TX - OCTOBER 30: Dak Prescott #4 of the Dallas Cowboys hands the ball off to Ezekiel Elliott #21 during the first quarter of a game between the Dallas Cowboys and the Philadelphia Eagles at AT&T Stadium on October 30, 2016 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)
ARLINGTON, TX - OCTOBER 30: Ezekiel Elliott #21 of the Dallas Cowboys runs the ball against Rodney McLeod #23 of the Philadelphia Eagles in the second quarter during a game between the Dallas Cowboys and the Philadelphia Eagles at AT&T Stadium on October 30, 2016 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)
CLEVELAND, OH - NOVEMBER 6, 2016: Running back Ezekiel Elliott #21 of the Dallas Cowboys gestures toward the crowd after scoring a touchdown during a game against the Cleveland Browns on November 6, 2016 at FirstEnergy Stadium in Cleveland, Ohio. Dallas won 35-10. (Photo by: Nick Cammett/Diamond Images/Getty Images)
PITTSBURGH, PA - NOVEMEBER 13: Ezekiel Elliott #21 of the Dallas Cowboys in action against the Pittsburgh Steelers on November 13, 2016 at Heinz Field in Pittsburgh, Pennsylvania. (Photo by Justin K. Aller/Getty Images)
ARLINGTON, TX - NOVEMBER 24: Ezekiel Elliott #21 of the Dallas Cowboys rushes the ball during the fourth quarter against the Washington Redskins at AT&T Stadium on November 24, 2016 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)
ARLINGTON, TX - NOVEMBER 24: Dak Prescott #4 of the Dallas Cowboys celebrates with Ezekiel Elliott #21 after scoring a touchdown during the fourth quarter against the Washington Redskins at AT&T Stadium on November 24, 2016 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)
EAST RUTHERFORD, NJ - DECEMBER 11: Ezekiel Elliott #21 of the Dallas Cowboys and Odell Beckham Jr. #13 of the New York Giants exchange jerseys after the game at MetLife Stadium on December 11, 2016 in East Rutherford, New Jersey (Photo by Elsa/Getty Images)
ARLINGTON, TX - NOVEMBER 24: Dallas Cowboys running back Ezekiel Elliott (21) and Dallas Cowboys quarterback Dak Prescott (4) share the Galloping Gobbler Award from Fox Sports after the NFL game between the Dallas Cowboys and the Washington Redskins on November 24, 2016 at AT&T Stadium in Arlington, TX. Dallas beats Washington 31-26. (Photo by Matthew Pearce/Icon Sportswire via Getty Images)
ARLINGTON, TX - DECEMBER 18: Ezekiel Elliott #21 of the Dallas Cowboys celebrates after scoring a touchdown by jumping into a Salvation Army red kettle during the second quarter against the Tampa Bay Buccaneers at AT&T Stadium on December 18, 2016 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)
ARLINGTON, TX - DECEMBER 26: Ezekiel Elliott #21 of the Dallas Cowboys takes a knee in the end zone before the Cowboys played the Detroit Lions at AT&T Stadium on December 26, 2016 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)
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Additionally, according to Florio, Lisa Friel, the NFL special counsel for investigations, allegedly told Goodell in a separate meeting that there was sufficient evidence to suspend Elliott. Roberts was reportedly not present at that meeting either.

According to ESPN, the NFLPA and Elliott's petition states:

"The withholding of this critical information from the disciplinary process was a momentous denial of the fundamental fairness required in every arbitration and, of course, does not satisfy federal labor law's minimal due process requirements."

As Florio states, the latest development in an already ugly case is likely to make the entire situation even uglier. The NFLPA petition comes after the union and Elliott already planned to call into question Thompson's credibility. The league and players union had already sparred over the matter in a series of tweets.

Additionally, the NFLPA argued that Elliott never got the chance to question Thompson's credibility in a cross-examination, thus keeping the arbitrator from making a fair ruling.

According to Florio, if the union's claim is accurate, Goodell may have to vacate the suspension, then re-hear the entire case, with the input of Roberts. At the very least, the matter seems a long way from being settled.

24 PHOTOS
Recent NFL players who have been accused of assault, domestic violence
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Recent NFL players who have been accused of assault, domestic violence

Ray Rice

- Indicted for third-degree aggravated assault after hitting his then-fiancee

(Photo by Ronald Martinez/Getty Images)

Brandon Marshall

- Arrested on charges of assault on a law enforcement officer in 2004
- Arrested on suspicion of domestic violence against his girlfriend in 2007
- Charged with misdemeanor battery in Georgia in 2008
- Arrested in 2009 for disorderly conduct while fighting with his fiancee
- Accused of hitting a woman in New York in 2012

(Photo by Wesley Hitt/Getty Images)

Adrian Peterson

- Pleaded no contest to misdemeanor charge of reckless assault against his four-year-old son

(Photo by Scott Cunningham/Getty Images)

Terrell Suggs

- Allegedly threw a soap dispenser at his then-girlfriend in 2009
- Accused of attacking his then-girlfriend in 2012

(Photo by Mike Ehrmann/Getty Images)

Fred Davis

- Accused of assaulting a woman in 2011

(Photo by Toni L. Sandys/The Washington Post via Getty Images)

Adam 'Pacman' Jones

- Cited for misdemeanor assault in October of 2006
- Part of a shooting and multiple assaults at a Las Vegas strip club in 2007
- Accused of hitting a woman at a strip club in Georgia in 2008

(Photo by Joe Robbins/Getty Images)

Albert McClellan

- Charged with battery and simple assault with threat or intent to do violence against his girlfriend in 2012

(Photo by NFL via Getty Images)

Bruce Miller

- Accused of assaulting girlfriend in 2015, later reduced to a charge of disturbing the peace

(Photo by Michael Zagaris/San Francisco 49ers/Getty Images)

Chris Cook

- Accused and acquitted of strangling his girlfiend

(Photo by Otto Greule Jr/Getty Images)

Courtney Upshaw

- Charged with third-degree domestic violence in 2009 alongside his then-girlfriend. Charges were later dropped.

(Photo by Patrick McDermott/Getty Images)

Dez Bryant

- Charged with a class A misdemeanor domestic violence charge for hitting his mother

(Photo by Ronald Martinez/Getty Images)

Dorial Green-Beckham

- Accused of pushing a woman down the stairs

(Photo by Wesley Hitt/Getty Images)

Justin Cox

- Arrested for domestic violence in 2015

(Photo by Joe Robbins/Getty Images)

Leroy Hill

- Arrested on suspicion of domestic abuse after allegedly hitting his girlfriend in 2010

(Photo by Ronald C. Modra/Sports Imagery/ Getty Images)

Phillip Merling

- Charged with aggravated battery against his pregnant fiancee in 2010

(Photo by Joel Auerbach/Getty Images)

Quincy Enunwa

- Accused of assaulting his girlfriend

(Photo by Alex Trautwig/Getty Images)

Randy Starks

- Charged with domestic assault in 2006

(Photo by NFL via Getty Images)

Robert Sands

- Charged with assault in the fourth degree in a 2013 domestic violence incident

(Photo by Joe Robbins/Getty Images)

Rodney Austin

- Charged with assault against a female and a child under 12 in 2015

(Photo by Rob Carr/Getty Images)

Santonio Holmes

- Arrested in 2006 for domestic violence and assault. Charges were later dropped
- Allegedly threw a glass at a woman outside an Orlando club

(Photo by Al Pereira/New York Jets/Getty Images)

Tony McDaniel

- Charged with domestic battery against his girlfriend in 2010

(Photo by NFL via Getty Images)

Maurkice Pouncey

- With his twin brother, allegedly assaulted and harassed several people outside a Miami club

(Photo by George Gojkovich/Getty Images)

Mike Pouncey

- With his twin brother, allegedly assaulted and harassed several people outside a Miami club

(Photo by Ron Elkman/Sports Imagery/Getty Images)

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