The Economic and Financial Crimes Commission (EFCC) has started investigating a man arrested with $265,000 at the Mallam Aminu Kano International Airport.
The suspect, Adam Musa Adam, arrived from New Delhi on an Ethiopian Airlines flight with a Nigerian passport.
Nigeria Customs officers discovered the undeclared cash hidden inside his luggage during a routine inspection.
Customs said carrying foreign currency above the approved limit without declaring it violates Nigeria’s money laundering laws.
The agency handed the suspect and the seized money over to the EFCC for further investigation.
The EFCC said it would investigate the case thoroughly and prosecute it if necessary.
Both the EFCC and Customs described the operation as a strong example of teamwork against illegal movement of money across Nigeria’s borders.