Bishop, along with several civilians, was killed following a palace coup orchestrated by his deputy, Bernard Coard, at Fort Rupert which was renamed Fort George.
The execution of Bishop, and the ensuing turmoil were used as justification by the US and Caribbean countries to militarily intervene in an operation called Urgent Fury.
Speaking at a flag-raising and wreath-laying ceremony where the killings took place, Grenada Culture Minister Ron Redhead, noted that the country will only be able to move on if the events of 1983 are addressed.
The Minister, whose father was a member of the militia, also noted that Grenada will be making an official request to the United States and the United Kingdom to provide factual information surrounding the bodies of Bishop and others.
Maurice Bishop took power in 1979 following the ousting of Prime Minister Eric Giary and held office until his death in 1983.
Maurice Bishop was shot dead by the armed forces at the military headquarters in the capital St George’s.