Mission head Salah El-Kholi told Ahram Online that the cachette includes 17 non-royal mummies wrapped in linen and very well preserved.
Newly discovered mummies are shown in their catacomb in the Touna el-Gabal district of the Minya province, in central Egypt, on Saturday.
The Touna el-Gabal site existed during the Greco-Roman period, which prevailed between third century NC and third century AD.
A mummy inside the newly discovered burial site in Minya, Egypt May 13, 2017.
The burial chamber was first detected previous year by a team of Cairo University students using radar technology.
Pointing to the edges of the necropolis where legs and feet of other mummies could be seen, the minister said that the find "will be much bigger", as work is now in only a preliminary stage.More news: Ex-congresswoman found guilty of using funds from fake charity
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He said the find is still in a preliminary stage, and more mummies are expected to be discovered in the area.
Egyptian Antiquities Minister Khaled el-Enany speaks to the media on Saturday in front of mummies following their discovery in catacombs in the Touna el-Gabal district of the Minya province, central Egypt.
"2017 has been a historic year for archaeological discoveries", said Anani.
Tom Cruise is the star of the forthcoming Mummy reboot, so the actor has ancient Egypt, sarcophagi, hieroglyphics, and the murderous tendencies of the bandage-wrapped undead on the brain.
The find is the latest in a number of discoveries that officials hope will help revive the struggling tourism industry.
In April, eight mummies were uncovered inside a 3,500-year-old tomb in the southern city of Luxor. "It is as if our ancestors are sending a message for tourism to come back strongly". No 2016 figure is yet available.