The Football Association (FA) said:
The FA has been made aware of developments in relation to an ongoing NCA (National Crime Agency) investigation, including a number of further arrests.
We are liaising with the authorities in relation to these allegations.
The FA will make no further comment at this time.
More top news
A "public-spirited" passerby retrieved the child.
A man wanted in connection with a hit-and-run crash which killed a four-year-old girl has been arrested, police have confirmed.
Scotland's First Minister was pictured with her feet up on the sofa while penning the document to Theresa May.