They were part of a five-member team of climbers from West Bengal.
A heavy snowstorm followed by a landslide buried the base camp at an altitude of 3,500 metres when the climbers were waiting for a fair weather to move towards higher camps.
A woman has miraculously survived the accident.
Two pilgrims -- Leela Narayanan Mandredath, 56, of Kerala and Satya Laxmi of Andhra Pradesh -- have died due to high altitude sickness in Simikot and heart attack in Tibet respectively, the Indian Embassy said.
Modi said Nepal must identify its needs and priorities to deliver results.
Modi said Nepal and India can benefit if they cooperate and work together for the promotion of five Ts: Tradition, Trade, Tourism, Technology and Transport.
The condition of over two dozen people who were admitted to the hospital in Kathmandu is said to be serious.
Deuba was elected as the 40th prime minister on June 6 with the support from Communist Party of Nepal-Maoist Centre, which is now a part of Left alliance and opting for merger with Communist Party of Nepal-Unified Marxist-Leninist.
An Indian woman, Mamata Devi Thakur, died in the accident, police said.
The 70-year-old was the only contender in the election.
Ravi Kumar from Uttar Pradesh's Moradabad fell from the 8,200 metre altitude, which is popularly known as Balcony, and died.
Kanchhi Maya Tamang, a trafficking survivor, summited Mt Everest with the message on Sunday, becoming the first to climb the world's highest peak for women empowerment and gender equality, according to UN Women Nepal.
A special team of Nepal Police arrested Samshul Hoda along with three others from Tribhuvan International Airport.
Nepal said it 'has received communications' from four member-states -- Afghanistan, Bangladesh, Bhutan and India -- in which they conveyed their inability to participate in the 19th SAARC summit.
A day after premier K P Oli resigned, Nepal President called on all the political parties to elect a new prime minister within a week
Nine Nepalese sherpas on Wednesday conquered Mount Everest, becoming the first climbers to scale the mountain in two years after a series of deadly disasters forced a shutdown of expeditions to the world's highest peak.
Media reports had suggested that the government was preparing to declare Rae persona non grata, meaning his diplomatic immunity would be withdrawn.
Nepal on Friday recalled its ambassador to India over charges of non-cooperation and indulging in anti-government activities.
Amid chants of Buddhist scriptures, Nepal PM K P Sharma Oli on Monday offered prayers at an ancient temple in Kathmandu to mark the reconstruction of five heritage sites demolished by last year's deadly earthquake.
15 people were injured in Kathmandu as people ran away from their houses in panic during the tremor, according to the home ministry spokesperson.