The quake also triggered landslides that blocked the Karakoram Highway (KKH) and several other roads.
According to the Pakistan Meteorological Department (PMD), the earthquake struck at 11:21am at a depth of 10 kilometres, with its epicentre located in northwestern Kashmir.
Meanwhile, the European Mediterranean Seismological Centre (EMSC), which reports magnitude using the Moment Magnitude Scale, recorded the quake at a magnitude of 5.7 at a depth of 31 kilometres. The EMSC said the earthquake was recorded about 58 kilometres northwest of Barishal in Pakistan.
Officials said that when the earthquake struck, heavy landslides occurred in mountainous areas, with clouds of dust seen rising from the slopes.
Gilgit-Baltistan caretaker Information Minister Ghulam Abbas told Dawn that a land-slide hit a motorcycle carrying two riders near Barswat Lake in the Ishkoman Valley of Ghizer district.
The riders were travelling from Imit village to Ishkoman when a falling rock struck them.
He said that Khush Baig, aged 60, a resident of Bilhanz, died on the spot, while Afzal Khan, aged 35, a resident of Barswat, was injured.
After receiving first aid at the Imit Dispensary, the injured man was shifted to the District Headquarters (DHQ) Hospital in Gah-kuch, where his condition is reported to be stable and out of danger.
The minister said the earthquake severely affected the Chipurson Valley of Upper Gojal in Hunza district. According to initial reports, the access road to the valley was blocked at multiple locations, while several kacha houses and cattle sheds were damaged or collapsed.
Rescue 1122 said that two children and a woman injured in the earthquake in Chipurson village were safely shifted from Chipurson to the Rural Health Centre (RHC) Hospital in Sost after receiving initial medical aid.
Mr Abbas said the Karakoram Highway was also blocked at multiple locations from Nagar to Khunjerab Top due to landslides. He added that machinery from the Gilgit-Baltistan Communication and Works Department was mobilised to clear the roads, and the KKH and several link roads have since been reopened for traffic.
According to Rescue 1122, the most affected area was the Chipurson Valley in Gojal, Upper Hunza, located near the Pakistan-China border close to the Khunjerab Pass.
Hunza Deputy Commissioner Nizamuddin told Dawn that Chipurson was the worst-hit area. He said the earthquake’s epicentre was likely located in the surrounding vicinity.
He added that road access to the valley was blocked and, according to initial assessments, several homes, cattle sheds, and public and private properties were damaged. Large cracks developed in parts of the valley, while roads and water channels supplying power houses were also damaged.
The deputy commissioner said damage assessment was under way and would be completed once road access was fully restored. He added that the Chipurson Valley has been experiencing underground tremors for several months.