The magnitude-6.2 earthquake that jolted Jishishan County in northwest China's Gansu Province late Monday evening has killed 117 people in Gansu and 31 in neighboring Qinghai Province so far, authorities said on Friday.

Authorities in Gansu also declared the conclusion of search operations after confirming that there are no longer missing people in the region. In Qinghai, however, three people remain unaccounted for. 

The strong quake on Monday was followed by several minor aftershocks throughout this week.

Over a thousand people in the two provinces were injured following the disaster.

In Gansu, 282 people were still being treated at hospitals and 17 people were in critical condition. Qinghai authorities said 166 wounded remain hospitalized.