Marcus Rashford says he was racially abused on his social media accounts following Manchester United’s defeat in the Europa League final in Gdansk.

The 23-year-old said he had received “at least 70 racial slurs” in the wake of United’s penalty shootout loss to Villarreal on Wednesday night.

Rashford said he received a torrent of racist abuse when he opened up his phone, revealing that one such slur came in a direct message from a person claiming to be a maths teacher.

United later tweeted to say their players had been subjected to “disgraceful racist abuse”.

Rashford wrote on Twitter: “At least 70 racial slurs on my social accounts counted so far. For those working to make me feel any worse than I already do, good luck trying.

“I’m more outraged that one of the abusers that left a mountain of monkey emojis in my DM is a maths teacher with an open profile. He teaches children!! And knows that he can freely racially abuse without consequence…”

Rashford also sent a thumbs up emoji to a user who said of the racist abuse: “You deserve it man you are awful.”

In a statement, Manchester United said they were “disgusted by the online hate and abuse aimed at Marcus Rashford and other players on social media after last night’s game” and that they “utterly condemn it”.

Greater Manchester Police assistant chief constable Chris Sykes said on Thursday afternoon: “We are aware of a number of racially aggravated social media posts made yesterday evening towards numerous Manchester United players.

“We are working through the posts from yesterday, which originate from countries across the world as well as the UK, to investigate these crimes. Tackling hate crime remains a priority for GMP. We take these reports very seriously and are working with our partners to ensure those responsible are identified.

“Nobody should be subject to hateful language and abuse and it is deeply upsetting not only to those who receive these comments, but to anyone who witnesses it on a public forum.

“Those who make these posts subject themselves, not just to criminal proceedings but to long-term implications to their personal and professional lives by making these comments.

“We would always encourage anyone who has been a victim, or witness of hate crime to report it at the earliest opportunity via 101, LiveChat or online. Alternatively you can visit www.letsendhatecrime.com.”

It is not the first time the England international has been the victim of abuse on social media. In January, GMP investigated racist comments sent to him and several other players.

Last month, English football, along with other sporting bodies, united for a four-day social media boycott to urge the companies to take a stronger stance over racial abuse on social media.

Speaking before Wednesday night’s incident, England boss Gareth Southgate praised the job players had done in highlighting abuse over the last year.

Southgate told BBC Radio 4’s Today programme: “I do think there has been progress over the last year on the issue of racism because social media is just in general a poor reflection of what happens through society. But the reality is if it wasn’t social media these situations are happening on our streets at certain times.

“(The players) have used their voice in a very positive manner, in particularly the last 12 months. We have to keep fighting racism.”

Show Racism the Red Card’s honorary president Shaka Hislop condemned the abuse.

The former Newcastle goalkeeper told the PA news agency: “This latest incident further exemplifies the need for meaningful and strong action in heeding the global call for battling racism, that many of us contributed to, and all of us witnessed over the last year.

“Without firm action our football grounds will become safe havens and breeding grounds for the worst aspects of our humanity.

“Football, as a game, has to match the work and example of players like Marcus Rashford in shaping a better, more inclusive, more equitable world, for the next generation of players and fans.”