Five people have so far been arrested in connection with online abuse directed at England players.
The UK Football Policing Unit (UKFPU) provided an update on its investigation on Thursday following abusive posts targeting Marcus Rashford, Jadon Sancho and Bukayo Saka in the wake of England's defeat on penalties to Italy in the Euro 2020 final on Sunday.
A statement issued to the PA news agency read: "Following England's defeat against Italy on Sunday a torrent of racist comments aimed at some of the team's black players appeared on platforms including Facebook, Instagram and Twitter.
"A hate crime investigation is under way by the UKFPU, with a dedicated team of investigators working their way through a large number of reports from across the country.
"So far, dozens of data applications have been submitted to social media companies and four people have been arrested by local police forces."
After that release of that statement, a fifth arrest was made.
Chief Constable Mark Roberts, the National Police Chiefs' Council football policing lead, said: "The racial abuse aimed at our own players following Sunday night's game is utterly vile and has quite rightly shocked and appalled people across the country.
"Our England team have been true role models during the tournament, conducting themselves with professionalism and dignity. I'm disgusted there are individuals out there who think it's acceptable to direct such abhorrent abuse at them, or at anybody else.
"The UKFPU investigation is well under way and work continues to identify those responsible. We are working very closely with social media platforms, who are providing data we need to progress enquiries.
"If we identify that you are behind this crime, we will track you down and you will face the serious consequences of your shameful actions."
The UKFPU said it receives reports from various channels including from local forces, charities, football clubs and other partner organisations.
When an offender's details are identified, these are passed on to the relevant local force to investigate further and take appropriate action in conjunction with the Crown Prosecution Service.
On Wednesday Greater Manchester Police confirmed a 37-year-old man from Ashton-upon-Mersey had been arrested after social media posts were directed towards England players following Sunday's match.