A parcel consisting of 1,154 grammes of marijuana was intercepted after being thrown over the north eastern fence of the New Amsterdam Prison on Saturday afternoon.
Acting Director of Prisons Gladwin Samuels said the rank in the observation post quickly reported the incident and the parcel was picked up by prison officers.
No arrests were made but Samuels said an investigation will be conducted.
Despite continuing raids in light of increased scrutiny on the prison system, drugs, weapons and other contraband continue to be found in the possession of prisoners at facilities across the country.