Tottenham boss Jose Mourinho has expressed his personal disappointment in Erik Lamela, Sergio Reguilon and Giovani Lo Celso for breaking coronavirus rules.
The trio were pictured together at a large party during the Christmas period in a clear breach of tier four rules which are in effect in the capital.
Spurs say they "strongly condemn" the actions of their players and the trio could face internal disciplinary action.
The indiscretion of Reguilon was particularly disappointing for Mourinho, who bought the Spaniard a Portuguese suckling pig as a present, having been told he was going to be on his own at Christmas.
"An amazing gift. An amazing gift," he said. "A Portuguese piglet which is amazing for Portuguese and Spanish (people).
"I gave (it to) him because I was told he was going to spend Christmas on his own. I had this thought about him. He was not alone as you could see and we the club of course feel disappointed because we give the players all the education, all the conditions.
"Of course we're not happy. It was a negative surprise for us."
Jose Mourinho: The early years
Jose Mourinho: The early years
Chelsea's new manager Jose Mourinho signs autographs for fans before watching his side in action against Oxford during the pre-season friendly match at Kassam Stadium. THIS PICTURE CAN ONLY BE USED WITHIN THE CONTEXT OF AN EDITORIAL FEATURE. NO WEBSITE/INTERNET USE UNLESS SITE IS REGISTERED WITH FOOTBALL ASSOCIATION PREMIER LEAGUE. (Photo by Chris Young - PA Images/PA Images via Getty Images)
FC Porto manager Jose Mourinho celebrates his teams 1-1 draw and progression to the quarter finals after the UEFA Champions League match at Old Trafford, Manchester. 02/06/2004: Jose Mourinho who will be officially unveiled later Wednesday June 2, 2004, as Chelsea's new manager. Porto yesterday released the man who had guided them to Champions League glory from his contract after agreeing a compensation package. THIS PICTURE CAN ONLY BE USED WITHIN THE CONTEXT OF AN EDITORIAL FEATURE. NO WEBSITE/INTERNET USE UNLESS SITE IS REGISTERED WITH FOOTBALL ASSOCIATION PREMIER LEAGUE. (Photo by Martin Rickett - PA Images/PA Images via Getty Images)
FC Porto's coach Jose Mourinho walks of with with the UEFA Champions League trophy after the press conference after his sides win against Monaco (Photo by Matthew Ashton/EMPICS via Getty Images)
Chelsea manager Jose Mourinho (R) and Newcastle United's Dean Saunders. (Photo by Owen Humphreys - PA Images/PA Images via Getty Images)
Chelsea's manager Jose Mourinho (L) hugs Frank Lampard after defeating Liverpool. (Photo by Nick Potts - PA Images/PA Images via Getty Images)
Chelsea manager Jose Mourinho holds up the Carling Cup after defeating Liverpool. (Photo by Rebecca Naden - PA Images/PA Images via Getty Images)
Chelsea's manager Jose Mourinho (c) celebrates the win against Barcelona with Eidur Gudjohnsen (l) Damien Duff and assistant manager Steve Clarke (r) (Photo by Mike Egerton - PA Images via Getty Images)
Chelsea manager Jose Mourinho (right) and Liverpool manager Rafael Benitez. (Photo by David Davies - PA Images/PA Images via Getty Images)
Chelsea manager Jose Mourinho lifts the Premiership trophy with Frank Lampard and John Terry (Photo by Mike Egerton - PA Images via Getty Images)
Chelsea's manager Jose Mourinho gives instructions to Hernan Crespo prior to scoring the winning goal (Photo by Neal Simpson - PA Images via Getty Images)
Chelsea manager Jose Mourinho (L) celebrates winning the Barclays Premiership title. (Photo by Rebecca Naden - PA Images/PA Images via Getty Images)
LONDON - MARCH 8: Jose Mourinho, the Chelsea manager, celebrates victory at the end of the UEFA Champions League, First Knockout Round, Second Leg match between Chelsea and Barcelona at Stamford Bridge on March 8, 2005 in London, England. (Photo by Shaun Botterill/Getty Images)
London, UNITED KINGDOM: Chelsea manager Jose Mourinho (L) and striker Arjen Robben celebrates at the final whistle after defeating Manchester United in their premiership match at Stamford Bridge in west London, 29 April 2006 to win the English Premiership title for the second year running. AFP PHOTO / ODD ANDERSEN Mobile and website use of domestic English football pictures subject to subscription of a license with Football Association Premier League (FAPL) tel : +44 207 298 1656. For newspapers where the football content of the printed and electronic versions are identical, no licence is necessary. (Photo credit should read ODD ANDERSEN/AFP via Getty Images)
LONDON - APRIL 29: (L-R) Steve Clarke and Jose Mourinho the Chelsea manager celebrates their team winning the Barclays Premiership title after the match between Chelsea and Manchester United at Stamford Bridge on April 29, 2006 in London, England. (Photo by Mike Hewitt/Getty Images)
LONDON - DECEMBER 18: Arsenal Manager Arsene Wenger (L) and Chelsea Manager Jose Mourinho (R) give instructions from the sidelines during the Barclays Premiership match between Arsenal and Chelsea at Highbury on December 18, 2005 in London, England. (Photo by Ben Radford/Getty Images)
Chelsea manager Jose Mourinho gives instructions to Didier Drogba whilst he is lying on the pitch from the touchline. (Photo by Peter Byrne - PA Images/PA Images via Getty Images)
MANCHESTER, ENGLAND - NOVEMBER 6: Manager Jose Mourinho and William Gallas of Chelsea look disappointed at the final whistle of the Barclays Premiership match between Manchester United and Chelsea at Old Trafford on November 6 2005 in Manchester, England. (Photo by Tom Purslow/Manchester United via Getty Images)
Chelsea manager Jose Mourinho and John Terry after the final whistle (Photo by Mike Egerton - PA Images via Getty Images)
UNITED KINGDOM - JANUARY 01: Chelsea's manager Jose Mourinho consoles Frank Lampard after the final whistle (Photo by Darren Walsh/Chelsea FC Via Getty Images)
UNITED KINGDOM - JANUARY 01: Chelsea's manager Jose Mourinho after the final whistle (Photo by Darren Walsh/Chelsea FC Via Getty Images)
Discover More Like This
BACK TO SLIDE
Lamela was absent from the 3-0 win over Leeds, where Reguilon was an unused substitute, while Lo Celso is injured anyway.
The club said in a statement: "We are extremely disappointed and strongly condemn this image showing some of our players with family and friends together at Christmas, particularly as we know the sacrifices everybody around the country made to stay safe over the festive period.
"The rules are clear, there are no exceptions, and we regularly remind all our players and staff about the latest protocols and their responsibilities to adhere and set an example.
"The matter will be dealt with internally."
This is not the first time Spurs' players have broken lockdown rules as there were several incidents during the first lockdown in the spring.
Mourinho was seen holding a personal training session with Tanguy Ndombele, Ryan Sessegnon and Davinson Sanchez were seen out running together, while Serge Aurier was a repeat offender, having a haircut and a personal training session with Moussa Sissoko.
West Ham also reminded Lanzini, who scored a last-gasp equaliser against Spurs in October, of his responsibilities.
A West Ham spokesperson said: "The club has set the highest possible standards with its protocols and measures relating to Covid-19 so we are disappointed to learn of Manuel Lanzini's actions.
"The matter has been dealt with internally and Manuel has been strongly reminded of his responsibilities."
Lanzini issued an apology on Twitter for his "bad mistake".
He said: "I want to apologise for a bad mistake I made over Christmas and I take full responsibility for my actions. I know people have made difficult sacrifices to stay safe and I should be setting a better example."
More positive cases at Fulham have resulted in Sunday's Premier League match against Burnley being postponed.
The news comes three days after the Cottagers' scheduled match against Tottenham was also called off following an outbreak at the London club.
Fulham said they had recorded "further new positive results" from their latest Covid-19 tests and Sunday's match was called off "after discussions with the Premier League and advice from medical teams".
The Premier League's stance remains that continuing with the season as planned is the right option.
It said in a statement: "With the health of players and staff the priority, the League and Fulham will agree a further action plan to control the outbreak to allow the club to resume their season safely.
"Players and staff will now be retested as part of a revised testing schedule.
"With low numbers of positive tests across the overwhelming majority of clubs, the League continues to have confidence in its Covid-19 protocols, fully backed by the Government, to enable fixtures to be played as scheduled.
"The League wishes those with Covid-19 a safe and speedy recovery and will rearrange Fulham's two postponed games as soon as possible."
In League Two, Colchester's home game with Tranmere was called off barely an hour before the scheduled 3pm kick-off due to what the hosts called "Covid-19 issues in both squads".