Ronaldo's lawyers reportedly paid Mayorga $375,000 to "never again speak about that night."
Cristiano Ronaldo through the years
Cristiano Ronaldo through the years
MANCHESTER, ENGLAND - AUGUST 12: Sir Alex Ferguson greets Cristiano Ronaldo as the young Portugese player signs for Manchester united at the Carrington Training Ground, Carrington on August 12, 2003 in Manchester, England. (Photo by John Peters/Manchester United via Getty Images)
Manchester United's Portuguese Cristiano Ronaldo (C) warms up during a training session with team-mates at Sukru Saracoglu Stadium in Istanbul December 7, 2004. Manager Sir Alex Ferguson brought a young squad to Istanbul for Manchester United's final group match against Fenerbahce in Champions League. REUTERS/Fatih Saribas FS/ABP
MANCHESTER, ENGLAND - DECEMBER 31: Cristiano Ronaldo of Manchester United in action during the Barclays Premiership match between Manchester United and Bolton Wanderers at Old Trafford on December 31 2005 in Manchester, England. (Photo by Chris Coleman/Manchester United via Getty Images)
LONDON - FEBRUARY 06: Cristiano Ronaldo of Portugal looks on prior to the International friendly match between Brazil and Portugal at the Emirates Stadium on February 6, 2006 in London, England. (Photo by Clive Mason/Getty Images)
Manchester United's Cristiano Ronaldo sits dejected (Photo by Tony Marshall - EMPICS/PA Images via Getty Images)
Cristiano Ronaldo and Wayne Rooney after the final match of the FIFA Club World Cup between Manchester United and Liga de Quito. (Photo by Andrew McGovern/Icon SMI/Icon SMI/Icon Sport Media via Getty Images)
Real Madrid's Portuguese forward Cristiano Ronaldo poses with his fourth European Golden Shoe in Madrid, on October 13, 2015. Cristiano, who ended the season with 48 goals from 35 appearances, won the Golden Shoe in 2008 while he was at Manchester United, in 2011 with Real Madrid and shared it with Luis Suarez last year. AFP PHOTO / JAVIER SORIANO (Photo credit should read JAVIER SORIANO/AFP/Getty Images)
MADRID, SPAIN - OCTOBER 31: Cristiano Ronaldo officially launches his CR7 by Cristiano Ronaldo underwear line with a private event in Madrid on October 31, 2013 in Madrid, Spain. (Photo by Denis Doyle/Getty Images For CR7)
Portuguese soccer player Cristiano Ronaldo gets down from a stand after posing for photographers in front a huge banner during the presentation of his men's underwear collection CR7 at Madrid's Cibeles Palace in Madrid, Spain, 31 October 2013. EFE/JUAN CARLOS HIDALGO
Real Madrid's Cristiano Ronaldo (Photo by Stephen Pond - EMPICS/PA Images via Getty Images)
MADRID, SPAIN - OCTOBER 27: Cristiano Ronaldo and Irina Shayk attend the LFP (Professional Football League) Awards Gala 2014 on October 27, 2014 in Madrid, Spain. (Photo by Europa Press/Europa Press via Getty Images)
Portugal's striker Cristiano Ronaldo (L) smiles after scoring during the Group G first round 2010 World Cup football match North Korea versus Portugal on June 21, 2010 at Green Point stadium in Cape Town. NO PUSH TO MOBILE / MOBILE USE SOLELY WITHIN EDITORIAL ARTICLE - AFP PHOTO / JEWEL SAMAD (Photo credit should read JEWEL SAMAD/AFP/Getty Images)
ZURICH, SWITZERLAND - JANUARY 13: FIFA Ballon d'Or nominee Cristiano Ronaldo of Portugal and Real Madrid, Irina Shayk and his son Cristiano Ronaldo Junior arrive during the FIFA Ballon d'Or Gala 2013 at the Kongresshaus on January 13, 2014 in Zurich, Switzerland. (Photo by Alexander Hassenstein - FIFA/FIFA via Getty Images)
(GERMANY OUT) Fussball International FIFA Ballon d Or / Weltfussballer 2012
Cristiano Ronaldo (Portugal) (Photo by Pressefoto Ulmer\ullstein bild via Getty Images)
SHANGHAI, CHINA - JULY 09: (CHINA OUT) Footballer Christiano Ronaldo of Real Madrid and Portugal, a new spokesman for MTG, attends MTG commercial activity on July 9, 2015 in Shanghai, China. (Photo by ChinaFotoPress/ChinaFotoPress via Getty Images)
GUANGZHOU, CHINA - JULY 27: (CHINA OUT) Cristiano Ronaldo #7 of Real Madrid warms up prior to the International Champions Cup football match between Inter Milan and Real Madrid at Tianhe Sports Center on July 27, 2015 in Guangzhou, China. (Photo by ChinaFotoPress/ChinaFotoPress via Getty Images)
SHANGHAI, CHINA - JULY 30: Cristiano Ronaldo of Real Madrid looks on during the International Champions Cup match between Real Madrid and AC Milan at Shanghai Stadium on July 30, 2015 in Shanghai, China. (Photo by Lintao Zhang/Getty Images)
Real Madrid's Cristiano Ronaldo holds his Ballon d'Or (Golden Ball) trophy to the crowd after winning the FIFA World Player of the Year 2013 award, before their Spanish first division soccer match against Granada at the Santiago Bernabeu stadium in Madrid January 25, 2014. REUTERS/Juan Medina (SPAIN - Tags: SPORT SOCCER)
Real Madrid's Cristiano Ronaldo celebrates scoring a goal against Malaga during their Spanish first division soccer match at Santiago Bernabeu stadium in Madrid October 19, 2013. REUTERS/Javier Barbancho (SPAIN - Tags: SPORT SOCCER)
Football - United States of America v Portugal - FIFA World Cup Brazil 2014 - Group G - Arena Amazonia, Manaus, Brazil - 22/6/14 Portugal's Cristiano Ronaldo gestures Mandatory Credit: Action Images / Matthew Childs Livepic EDITORIAL USE ONLY.
Soccer player Cristiano Ronaldo poses for photographers on the red carpet at the world premiere of "Ronaldo" at Leicester Square in London, Britain November 9, 2015. REUTERS/Stefan Wermuth
Real Madrid's Cristiano Ronaldo reacts during their Spanish First Division soccer match against Malaga at Santiago Bernabeu stadium in Madrid, September 26, 2015. REUTERS/Juan Medina
PARIS, FRANCE - JULY 10: Portugal's forward Cristiano Ronaldo hold up the winners' trophy as he celebrates with teammates Portugal's forward Ricardo Quaresma (L), Portugal's defender Pepe (C) after beating France 1-0 to clinch the Euro 2016 final football match between France and Portugal at the Stade de France in Saint-Denis, north of Paris, on July 10, 2016. (Photo by Mustafa Yalcin/Anadolu Agency/Getty Images)
Cristiano Ronaldo of Portugal with Coupe Henri Delaunay during the UEFA EURO 2016 final match between Portugal and France on July 10, 2016 at the Stade de France in Paris, France.(Photo by VI Images via Getty Images)
MADRID, SPAIN - APRIL 11: Cristiano Ronaldo of Real Madrid celebrates his side going through to the Semi-Finals of the UEFA Champions League after the UEFA Champions League 2017-18 quarter-finals (2nd leg) match between Real Madrid and Juventus at Estadio Santiago Bernabeu on 11 April 2018 in Madrid, Spain. (Photo by Power Sport Images/Getty Images)
PORTO, PORTUGAL - AUGUST 31: Portugal forward Cristiano Ronaldo with Faroe Island midfielder Kaj Bartalsstovu in action during the FIFA 2018 World Cup Qualifier match between Portugal and Faroe Islands at Estadio do Bessa on August 31, 2017 in Porto, Portugal. (Photo by Gualter Fatia/Getty Images)
SOCHI, RUSSIA JUNE 30, 2018: Portugal's Cristiano Ronaldo in action in their 2018 FIFA World Cup Round of 16 football match against Uruguay at Fisht Stadium. Valery Sharifulin/TASS (Photo by Valery Sharifulin\TASS via Getty Images)
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Documents that appear to include Ronaldo's signature have been published by Der Spiegel and reported elsewhere. However, according to the BBC Christiansen said: "This agreement is by no means a confession of guilt."
Christiansen added that the media acted "irresponsibly" by basing reports on "stolen and easily manipulated digital documents."
These "fabricated documents" may have been sold to the media by a cyber criminal, Ronaldo's lawyer hinted.
"So that there are no doubts, Cristiano Ronaldo vehemently denies all the accusations in this civil action, in consistency with what he has done in the last nine years," Christiansen said.
"The documents that allegedly contain statements by Mr Ronaldo and were reproduced in the media are pure inventions. By 2015, dozens of entities (including law firms) in different parts of Europe were attacked and their electronic data stolen by a cyber criminal.
"This hacker tried to sell such information, and a media outlet irresponsibly ended up publishing some of the stolen documents, significant parts of which were altered and/or completely fabricated.
"Once again, for the avoidance of doubt, Cristiano Ronaldo's position has always been, and continues to be, that what happened in 2009 in Las Vegas was completely consensual."