Cullen was represented by Advocate Sarah Dale who entered her client’s plea on his behalf.
The 29-year-old was arrested by Customs Officers after they found 10kg of drugs believed to be heroin worth £10million concealed in the fuel tank of a vehicle that arrived in the island on the Condor Liberation at the beginning of September.
Pictured: The man was arrested by Customs Officers at the Harbour.
Crown Advocate Richard Pedley appeared for the prosecution.
Lieutenant Bailiff Anthony Olsen presided over the hearing and the case was heard by Jurats Jerry Ramsden and Kim Averty.
Cullen has been remanded in custody until he is sentenced on 17 December, before a panel of Jurats who only assemble as the ‘Superior Number’ to consider the most serious of cases.