The cocaine found aboard one of the two planes that crash-landed in Region Seven (Cuyuni-Mazaruni), weighs 390 kilograms (kg).
This was announced by the Guyana Police Force on Tuesday.
Authorities found two aircraft, a 206 Cessna and a Beechcraft, at Issano, Region Seven.
On Sunday, three foreign nationals and an aircraft were found in Region Seven (Cuyuni-Mazaruni) and on Monday another aircraft was discovered, this time with a large amount of cocaine and a dead man.
The three men are a 38-year-old pilot from Boa Vista; a 29-year-old pilot from Temeremo, Venezuela; and a 35-year-old internet technician from Manaus, Brazil.
According to Regional Commander, Superintendent Deon Moore, the second aircraft was found several hundred yards away from the Nine Miles Airstrip, Issano – where the first one was located.
The police have since confirmed that along with the human remains, a large quantity of cocaine was also found in the crashed aeroplane. On Sunday, Police acting on information received proceeded to the airstrip located in the Middle Mazaruni area and a red and white 206 Cessna aircraft was found.
Ranks, however, questioned the three men via Google Translate, where it was disclosed that they were heading to Suriname with a second aircraft when it developed mechanical issues.
The men claimed that this forced them to crash land, causing one of the occupants to suffer a fractured right arm and minor bruises about his face.
At the time, while Police could not find the other aircraft, the one discovered was examined but there was no visible damage. Along with the three persons, nothing illegal was found in the aircraft other than a cell phone, satellite phone, identification documents and other items. Nevertheless, the three men were arrested and taken into custody.
The discovery of the second aircraft was made hours after by the police ranks who went in search of the missing plane. Investigations are ongoing and the aircraft remains on the ground under Police security.
Back in September 2016, a Joint Services patrol discovered an illegal aircraft hidden just off of the Yupukari Airstrip, Rupununi, with United States registration N-767-Z.