Pakistani authorities say they are racing against time to send relief supplies, including blankets, tents and food to the country's quake-affected rugged northwest amid forecasts of heavy rains and snowfall there for the next week.

Asghar Nawaz, the director-general at the National Disaster Management Authority, said on Friday that the authorities are using trucks, helicopters and a military plane to provide aid.

Monday's magnitude-7.5 earthquake was centered in neighboring Afghanistan's Badakhshan province that borders Pakistan, Tajikistan and China. Pakistan's Swat Valley and the northwestern tribal area was hard hit.

The temblor killed 396 people, including 272 in Pakistan, 121 in Afghanistan and three on the Indian side of the disputed Kashmir region.

The earthquake damaged 35,492 homes in Pakistan, where government has promised to help people rebuild their homes.