Ariel Vallejo, the financier whose dealings led him into the orbit of the Argentine Football Association, is now in detention as investigators dig through his finances. The sheer size of the money involved has struck those handling the case. A central question drives the inquiry: did the fortune come from football alone, or did it flow in from other illegal activities? Answering that means tracing payments across accounts and entities connected to Vallejo and the people around him. His arrest has added a fresh dimension to a matter already entangled with the governing body of Argentine football. Nobody expects the work to wrap up quickly given the volume of transactions under review. For now, Vallejo remains behind bars while the money trail is followed wherever it leads.