Jersey's Customs Officers think they have intercepted around £10 million pounds worth of heroin.
Ten kilos of drugs were found hidden in the fuel tank of a car arriving off the ferry from Poole on Saturday.
A 29 year old man from Liverpool has been charged with importing drugs.
Alexander Daniel Cullen is expected to appear before Jersey's Magistrate's Court today.
A government statement says officers are awaiting full analysis of the consignment, but that initial tests suggest the substance to be heroin.
"If confirmed, the haul could have a street value in Jersey of up to £10 million." - GoJ
The Customs and Immigration Service says anyone with information about drugs smuggling should call the Customs Freephone on 0800 735 5555 and speak to an officer in complete confidence.

Bye-bye Bath Street Blockbuster: £500K to update street mapping
Deputy Philip Ozouf suspended
2030 carbon targets 'unachievable' with Government's current approach
'Prioritised inspection plan' for farmworker accommodation
'Home from home' near Southampton Hospital receives £10K from Jersey firm
More padel courts at Jersey's Les Ormes for the summer
SGB Hire CI ceases trading
Two men assaulted on Midvale Road