West Ham have confirmed Kurt Zouma has been fined "the maximum amount possible" while the club assist an investigation from the RSPCA into a video showing the defender kicking and slapping his cat.
The disturbing clip surfaced on Monday, with Zouma's actions condemned by the Hammers, RSPCA and other animal welfare groups.
While a statement from Zouma said he was "deeply sorry", he was still selected by David Moyes for Tuesday's match against Watford, which West Ham won 1-0.
"It is certainly ongoing and the club are dealing with it," Moyes told BT Sport after the match, and a statement followed from West Ham on Wednesday.
Both the club and the RSPCA confirmed Zouma's two cats had been taken into care, while his fine – reported to be worth £250,000 – will be donated to charity. Further punishment may follow the RSPCA's investigation.
West Ham said: "West Ham United can confirm that the club is supporting an RSPCA investigation into the actions of Kurt Zouma in the video circulated online this week.
"Kurt and the club are co-operating fully with the investigation and the player has willingly complied with the steps taken in the initial stage of the process, including delivering his family's two cats to the RSPCA for assessment.
"Kurt is extremely remorseful and, like everyone at the club, fully understands the depth of feeling surrounding the incident and the need for action to be taken.
"Separate to the RSPCA's investigation and pending further sanction once the outcome of that process is determined, West Ham United can confirm that Kurt Zouma has been fined the maximum amount possible following his actions in the video that circulated.
"The player has immediately accepted the fine and has requested that it is donated to animal welfare charities.
"West Ham United would like to reiterate our condemnation of Kurt's actions and make it clear that the matter continues to be handled with the utmost seriousness.
"However, we believe it is now important to allow the RSPCA to conduct their investigation in a fair and thorough manner, and will be making no further comment at this stage."
The RSPCA said in a short message on Twitter: "We'd like to reassure people that we're investigating and the cats are safe and in our care.
"We have been dealing with this since before the clip went viral online and we need to follow the proper legal process and not discuss due to UK GDPR laws."