The tomb, which is believed to date to the Ptolemaic period - around 305 to 30 B.C - was discovered some five meters below ground during excavation work ahead of the construction of a new building, according to a statement published by the ministry earlier this month.
An antiquities ministry team was inspecting an area in the Sidi Gaber district of Alexandria before construction started for a new building when they discovered the sarcophagus.More news: Time machine throne speech transports province to the '90s: Opposition
Ancient Egypt has been in the headlines recently after a mysterious mummified body, that hadn't been seen by the public for over a century, has been uncovered with two heads - one belonging to a crocodile and one to Pharaonic Egyptian princess killed by the creature.
In addition, experts in Australia found the wounded remains of an ancient priestess in a 2500 year old Egyptian coffin, which was long considered to be empty.
On the other side of the world, a rare ancient artefact depicting the famous female pharaoh Hatshepsut surfaced in the UK.More news: How the British media reacted to England's World Cup exit
The existence of the alabaster head may be an indication that burial belonged to some great man of the time. An ancient statue of a Nubian king with an inscription written in Egyptian hieroglyphics was also found at a Nile River temple in Sudan.
In February, archaeologists found a hidden network of tombs south of Cairo in the Minya Governorate, which - like the giant granite sarcophagus - have probably lain untouched for 2,000 years.
The city of Alexandria is through to have been founded by Alexander the Great in 332 BC. Experts say it'll take them five years to work through that site.More news: Tour de France: Tom Dumoulin gets 20 second time penalty for drafting
The Associated Press contributed to this article.