Uefa has opened an investigation into allegations of indecent conduct by four Real Madrid players during their Champions League last-16 win against Atletico Madrid.
Antonio Rudiger, Kylian Mbappe, Vinicius Jr and Dani Ceballos allegedly made gestures towards the home fans after Real Madrid beat their city rivals on penalties to book their place in the quarter-finals.
TV pictures showed German defender Rudiger appearing to make a throat-slitting motion, apparently towards the crowd after the shootout victory, while Mbappe was shown seemingly making a crotch-grabbing gesture.
Spanish media said Atletico reported the actions to Uefa last week.
The players could be at risk of suspension but there is no guarantee the case will be heard before their quarter-final with Arsenal. The first leg for that tie is at Emirates Stadium on 8 April and the return leg a week later.
In a statement, Uefa said: “[An] ethics and disciplinary inspector has been appointed to investigate allegations of indecent conduct” made by the four Real Madrid players.
“Further information regarding this matter will be made available in due course.”

The Premier League has announced it will have two transfer windows this summer to allow Manchester City and Chelsea to sign players before the Club World Cup.
The window will open between Sunday, 1 June and Tuesday, 10 June, then close for five days before running again from Monday, 16 June until Monday, 1 September.
This summer features the first expanded Fifa Club World Cup, which involves 32 teams and adopts the format of the regular World Cup of the past few years.
Chelsea and Manchester City are the Premier League teams in the tournament which takes place in the United States from Sunday, 15 June.
But the Premier League can only have 12 weeks of a summer window – hence the five-day break in order to run it until 1 September.
Fifa has allowed new players to be registered for the Club World Cup from 1-10 June, and again from 27 June-3 July for the knockout stage.
This is happening firstly, to bring order to the global registration system, world governing body Fifa only permits the transfer window in any individual country to be open for 16 weeks in any calendar year.
In Europe, precedent dictates four of those weeks are for the winter window, leaving 12 in the summer. In 2024, the Premier League transfer window opened on 14 June and closed on 30 August.

Chelsea Supporters’ Trust has asked the Premier League to act and investigate co-owner Todd Boehly’s involvement in ticket reselling website Vivid Seats.
In an open letter to the league’s chief executive Richard Masters, the group reiterates a past complaint that Boehly’s involvement in Vivid Seats as a director and investor – while also owning a 13% stake in Chelsea – is a “breach of trust” and “a clear conflict of interest”.
It also highlights how Vivid is listed as an ‘unauthorised ticketing website’ by the Premier League, allowing overseas fans to buy tickets unofficially for between £90 and £20,000.
CST has also submitted evidence against the American company to the government’s Department for Culture, Media and Sport (DCMS).
In the letter, it said: “Many CST members are clearly infuriated by this connection and have written to us.
“As a director of Chelsea FC and part-owner, Mr Boehly’s connection with Vivid Seats is totally inappropriate and significantly undermines the efforts of Chelsea FC, the Premier League, and the Metropolitan Police to combat ticket touting.
“Mr Boehly has been contacted directly by the CST and has been offered multiple opportunities to both publicly and privately address supporters’ concerns.
“Neither Mr Boehly nor his representatives have, however, acted on these requests, and thousands of tickets remain for sale on the Vivid Seats website.”
Chelsea’s official website states the practice of “ticket touting is illegal” and any tickets bought unofficially will be “invalid”, with fans “refused entry to the stadium”.
Vivid is legally allowed to operate overseas but prohibited for UK users.
The CST letter, which has also been backed by the Football Supporters’ Association, added it was encouraged by the club pledging to take action on ticket touting. An email has been sent to season ticket holders detailing a number of measures being taken, although without naming Vivid Seats or other ticket resellers.
There have been concerns about a flat atmosphere at Stamford Bridge, previously highlighted by previous manager Mauricio Pochettino and echoed by current head coach Enzo Maresca at times this season.
Chelsea will continue to trial a new singing section in the forthcoming Europa Conference League match against Legia Warsaw next month.