Nepal PM Sushil Koirala has warned that the quake toll could reach 10,000, but assures that his government is working on a war footing on rescue and rehab.

Reuters reported that a Nepal home ministry official put the latest death toll at 4,350. If the death toll does reach 10,000, that would be even higher than the 8,500 killed in a massive 1934 quake, the Himalayan nation's worst disaster to date.

Responding quickly in one of its most extensive response to an international crisis, India has flown in relief material, rescue teams and medical supplies to quake-hit Nepal, where the death toll has soared past 4,000 and is expected to rise.

Also widening 'Operation Maitri', India has moved its rescue mission outside Nepal's capital into the epicentre of the devastating earthquake at Barpak village in Gorkha district, while its engineers opened up the road to Kathmandu from India.

The opening up of the road from India to Kathmandu means that relief materials and equipment can now be moved by road instead of just the air in the wake of the devastating earthquake in Nepal.