Local law enforcement officials say they have not been briefed by their counterparts in Ghana on the arrest of a Jamaican man accused of being the mastermind behind the largest drug find in the African country.

However one official, who spoke on condition of anonymity, noted that the Ghana Police Service was not required to notify Jamaican authorities since the accused, 58-year-old Wesley Appleton, had migrated to the African nation.

"They can as a matter of courtesy, depending on the man's antecedents there ... but we haven't heard from them at all," the official said.

The Criminal Investigations Department (CID) of the Ghana Police Service has alleged that Appleton was behind the cultivation of some 400 acres of cannabis at Koru in the Alavanyo-Nkonya District in the Volta Region.

Director general of the CID, Ghana's Commissioner of Police Prosper Agblor, said the farm was the largest ever in the country's history.

The police say they also seized five home-made firearms, which were unlicensed, and close to five tonnes of cannabis that were harvested and stored in fertiliser bags and plastic drums in the cottage where Appleton was held.

Agblor said the Jamaican, who migrated to Ghana in 2004, first landed on the police radar in 2010 when the CID gathered intelligence indicating that he had acquired a large portion of land in the Alavanyo-Nkonya area and was cultivating cannabis on a large scale for export.