The incident occurred in a mining area, underscoring the need for increased safety measures and vigilance in the industry.
President Hassan said the landslide occurred at Ng'alita mine in Bariadi district, Simiyu region.
"These fellow Tanzanians were small miners in the area, trying to earn a living for themselves, and their families," President Hassan said.
Defense agencies are working to remove more bodies from the rubble, she said.
Subsequent details and developing information will be updated.