West Ham United and Newcastle United have both had their stadiums raided by Her Majesty's Revenue and Customs as part of an investigation into transfer activity.
Ed Malyon of The Independent reported Newcastle's managing director Lee Charnley has also been arrested.
Per Sky Sports News' Bryan Swanson, HMRC confirmed the nature of the investigation in a statement:
Bryan SwansonHMRC has arrested "several men working within professional football industry for suspected income tax & national insurance fraud." #SSNHQ
April 26, 2017 at 8:25:41 AM GMT
This article will be updated to provide more information on this story as it becomes available.