A High Court registrar has been told of "concerns" that cash from money laundering might have found its way to Blackpool.
The issue was raised during a preliminary hearing of a legal dispute between the League One club's owners, the Oyston family, and its president Valeri Belokon.
Lawyers for the Oystons said it had come to light that Latvia's financial regulator, the Financial and Capital Markets Commission (FKTK), recently imposed a fine of more than €1m (£780,000) on Baltic International Bank (BIB), which is owned by Mr Belokon.
Belokon's company VB Football Assets is pursuing a claim for "unfair prejudice" against the Oystons and accusing them of stripping the Seasiders of funds.
