The Boston Red Sox are under investigation by Major League Baseball for possibly circumventing the rules on signing international players, according to a report.

The investigation is centered on the Red Sox's 2015 international signings of multiple Venezuelan players. The report is looking into package deals in which several players from the same trainer.

Although package deals are not outlawed, they can allow teams to get around international bonus pool rules as a team can overpay a player exempt from bonus pools to get a bonus-pool player for less money.