As many as 44 passengers were killed and nearly 30 injured on Thursday after their bus fell in a gorge in the mountainous Kullu district of Himachal Pradesh of India, officials said.
The number of deaths could rise as several passengers were sitting on top of the bus, reports said.
The private bus was filled with about 70 people when it plunged into a 500-foot deep gorge near the Dhoth Morh in Banjar tehsil of the district. The bus was on its way to Gada Gushaini, about 60 km from Kullu.
Kullu police chief Shalini Agnihotri told news agency AFP that authorities launched a rescue operation immediately and moved the injured to hospitals.
The bus was completely crushed in the accident.
It appeared that having too many people onboard and reckless driving may have caused the accident, Sheetal Kumar, a government official said.
Television images showed the mangled remains of the bus near a stream at the bottom of the gorge as locals made human chains to help survivors cross it. The injured were taken to the Banjar Civil Hospital and the Kullu district hospital.
Prime Minister Narendra Modi condoled the incident on Twitter.
Himachal Pradesh Governor Acharya Devvrat and Chief Minister Jai Ram Thakur also expressed grief over the accident. The chief minister has ordered a magisterial inquiry into the incident.
Most of the victims were residents of various areas in Kullu district. The district administration announced an immediate relief of Rs. 50,000 each to the families of those killed and the injured.
Himachal Pradesh is prone to deadly accidents owing to its rugged terrain, with speeding and over-crowding adding to the safety hazards. According to government data analysed by advocacy group SaveLIFE Foundation, around 1,200 people have died each year from road accidents in the state between 2014 and 2017.