Fresh tremors were felt in Bihar on Sunday, which sparked panic in the state where the death toll from Saturday's quake has risen to 51.
The tremors were the result of an aftershock in Nepal that measured 6.7 on the Richter scale.
Officials said around 250 people in the state were injured in the tremors.
The updated toll was announced by chief minister Nitish Kumar at a press conference here on Sunday, soon after he chaired a review meeting with secretary-level officials at the state secretariat here.
Nitish said he had directed all ministers and departmental secretaries to camp out in districts under their charge to facilitate relief to the earthquake victims.
He added the state government was 'ready' to extend a helping hand in the restoration of power in the earthquake ravaged Nepal in addition to the distribution of relief material in bordering areas.
"All central assistance is being landed in Kathmandu, the capital of Nepal. But we share a large border with Nepal and can be of much use in the distribution of relief and providing free medical assistance to injured Nepali citizens in border areas", he said.
Officials said the region worst affected by the tremors was East Champaran along the Indo-Nepal border, which witnessed 11 deaths.
Sunday's tremblors left at least 15 people injured, but no deaths have been reported yet.
People in several parts of Bihar camped out overnight in open spaces, fearing another earthquake.
"We thought something bigger could happen... We camped out with the kids and the elderly as staying in our apartment was risky," said Ashok Kumar, a businessman in Kankarbagh area of the state capital.
Sources said Nitish personally visited several parks and fields to talk to the people and calm them down.