International financial services outfit Western Union has shed more light on a federal investigation into company transactions related to gaming activities.

On Friday, Western Union filed a 10k report with the Securities Exchange Commission, in which it revealed new details regarding a federal grand jury subpoena served by the US Attorney for the Southern District of Florida in March 2014. The filing says the subpoena was related to transactions with gaming companies based outside the US.

Western Union said the US Attorney was cutting a broad swathe, seeking documents spanning a period from January 2007 to November 27, 2013. The documents requested included “a variety of [anti-money laundering] compliance materials,” including suspicious activity reports and board meeting minutes.

More specifically, the US Attorney sought records for Western Union transactions for 33 agent locations in Costa Rica. The feds subsequently ordered the seizure of all moneys sent to two Costa Rican agents over a 10-day period in March 2014.