Hundreds of people in northwest China's Gansu Province witnessed an unidentified flying object (UFO) Saturday night, and local police are searching for what may have dropped in the area.

Witnesses in Gansu's capital Lanzhou said that a strange shining object swept through the sky at about 11:36 p.m. Saturday, following by earthshaking sounds like bombing. They also reported that an ensuing tremble was felt within 100 sq km from Lanzhou.

One of them, a driver surnamed Zhang, said that he saw a shining ball with a three-meter-long trail flying from west to east and heard two thunders right after, when he was driving from Lanzhou city to neighboring Yongdeng county.

The local public security department confirmed that they have received more than 700 reports on the case, some saying it was an earthquake, and others saying it was an aerolite falling. The department has sent policemen to search for possible fallen objects but found nothing so far.

Liu Yanan, astronomy professor at the Northwest Normal University, said that it might be a meteoroid entering the earth's atmosphere.

Source: Xinhua