The Yi'an county government confirmed in the afternoon that Mengchang villagers heard a big noise and then saw a big ball of fire falling down to a vegetable garden belonging to a villager.
Photos taken by villagers showed that the object is a metal ball, half-covered by a layer with a jagged edge.
Two other similar objects were spotted falling from the sky and down to the neighboring Baiquan county.
One object had a diameter of 70 centimers and weighed around 40 kilograms, China Central Television reported.
The two places have been blocked off, and an investigation is underway.