Sevilla have conveyed their “disgust” after winger Lucas Ocampos appeared to be touched in what the club described as an “obscene act” by a home supporter in their victory at Rayo Vallecano.

The Argentina international, who has called for LaLiga to take the incident seriously, appeared to be poked in the backside by a fan as he was preparing to take a throw-in in the 32nd minute of Monday’s contest.

His club released a statement expressing their support for the player and calling for LaLiga to take “appropriate measures” in response to the incident, while Rayo have condemned the act and are in the process of identifying the fan in question.

A statement on Sevilla’s official website read: “On the obscene and completely inappropriate act suffered by Lucas Ocampos at the Estadio de Vallecas:

“We would like to place on record our disgust at the incident that occurred on Monday during our match against Rayo Vallecano, in which our player Lucas Ocampos was subjected to an obscene and completely inappropriate act by a home fan.

“We hope that the appropriate measures outlined in the regulations will be taken to prevent such behaviour from happening again on a football field and we have expressed this to LaLiga directly.

“These gestures and behaviours should not be allowed in our competition if we aspire to be the best league in the world.

“We send our full support to Lucas Ocampos, who showed composure and immense professionalism, despite the unacceptable behaviour of the fan who harassed him.”

Ocampos, 29, who turned around to confront the fan, also demanded action after his side’s 2-1 victory, telling DAZN: “I hope the league takes it seriously, like it takes racism, like it takes those things .

“I don’t think all the Rayo people are like that, because the truth is that they always treat us with respect.

“There is always a fool and I hope it doesn’t happen in other areas, because if it happens in women’s football, we know what can happen.

“I restrained myself because I have two daughters and I hope that tomorrow it doesn’t happen to them. Let’s hope they make the decision they have to make and I hope that a fool like this doesn’t stain the fans, because the truth is they behaved very well.”

Rayo released a statement saying they “condemned” the behaviour of the fan.

The statement added: “This isolated action is solely the individual responsibility of the fan who carried it out, with neither Rayo Vallecano nor any of the other almost 15,000 spectators who filled the Estadio de Vallecas for the match against Sevilla having any responsibility for it and who had exemplary behaviour.

“Rayo Vallecano at this time is working to identify the fan so that, if he is a season ticket holder, it can adopt the appropriate disciplinary measures according to the internal regulations.

“Rayo Vallecano has always promoted the maximum respect towards referees, footballers and coaches. Individual actions like this are opposite to the values ​​that Rayo Vallecano promotes.”

The PA news agency has contacted LaLiga for comment.