The USGS initially measured the quake at 5.7 magnitude, but revised it to 5.9 a few hours later. It also revised the depth from 20.8 kilometers (12.9 miles) to 9 kilometers (5.6 miles).
Some houses have collapsed in Harnai following the quake, according to the Balochistan Levies Force, the paramilitary law enforcement group in the province.
“Since 3 a.m. the rescue operation has been underway. The injured have been taken to the hospital via helicopter,” said Sohail Afridi, the district commissioner of Harnai, adding the situation is “currently under control.”
Harnai is located in a rural area and not easily accessible, welfare organization Edhi Foundation told CNN.