The death toll from Afghanistan's worst earthquake in years jumped to over 1,400 on Tuesday with thousands more injured, authorities said, as difficult terrain hindered rescue efforts in isolated villages of the country's mountainous eastern region.

At least 1,411 people have died, 3,124 have been injured and over 5,400 houses have been destroyed, Taliban administration spokesperson Zabihullah Mujahid said.

More people are feared trapped under rubble, said the Afghan Red Crescent Society, a humanitarian group working in the region. The U.N. coordinator in Afghanistan said the toll was likely to rise.