Sho Darvish’s baseball betting arrest has become a family affair.

On Tuesday, several news outlets reported that Darvish’s older brother, Texas Rangers pitcher Yu Darvish is now being investigated by Major League Baseball for his potential involvement in Sho’s alleged gambling ring.

According to The Japan Times, there are no charges—yet—for Yu Darvish at this point, but the MLB is conducting a probe “to find out if there is any link between the ace and the reason for his younger brother’s arrest.”

In an email to the Japanese news outlet, MLB VP for communications Michael Teevan said: “We are aware of this situation and are looking into it, per our standard protocols.”