The seriously wounded persons were being shifted to the provincial capital Peshawar through helicopter, said DG Rescue 1122.
Sindh CM said that 897 more COVID-19 patients defeated virus today.
3,138 new infections were detected after 21,033 tests were conducted in the past 24 hours.
Pakistan confirmed 148 more deaths from novel coronavirus (COVID-19) in the last 24 hours as the nationwide tally of fatalities has jumped to 3,903.
The United States recorded 840 deaths from the new coronavirus in the past 24 hours.
The death toll climbed to 20 after two more dead bodies were recovered from the debris of the building collapsed in Karachi's Lyari.
The death toll in Peshawar stands at 323, more than half of the people who died of COVID-19 in Khyber Paktunkhwa province.