The bus was carrying more than 90 passengers.
In probably the worst-ever bus accident in the country, 57 people, including 39 women and four children, were killed and 31 injured, six of them critically, after an overcrowded Telangana State Road Transport Corporation (TSRTC) bus swerved off a ghat road and hurtled 30ft down onto a valley at Sanivarampet village in Jagtial district on Tuesday.
It is suspected that the driver lost control near a speed breaker resulting in the accident.
Media cited brake failure as the possible reason for the tragedy, but Narendhar said that needed to be investigated, adding that the 94 people on board the bus, including its driver and conductor, had exceeded the legal limit of 52. "I understand local authorities are making efforts to rescue and help passengers who have suffered", the President tweeted.
According to Hindustan Times, the accident, which killed at least five children, occurred as the bus returned from the Hanuman Temple atop Kondagattu Hills. The bus was just one minute away from joining the National Highway and less than half an hour away from its destination, Jagityal.
The bus, belonging to the Jagtial depot, had more than 60 passengers, who reportedly came to the hillock temple at Kondagattu. However, the exact reason is under investigation, Jagtial Superintendent of Police Sindhu Sharma said.More news: Obama: US Government 'Not for Sale'
Chief Minister K.Chandrashekhar Rao expressed shock over the road accident.
The injured were rushed to hospitals in Jagtial and neighbouring Karimnagar district, police said.
He also asked officials to provide immediate medical assistance to the injured, a release by the Chief Minister's Office (CMO) said. The state government was quick to announce an ex gratia of Rs 5 lakh each to the kin of the deceased.
Recently, the TRS MP K Kavitha and Telangana minister KT Rama Rao visited the hospital to meet the injured.
"The bus accident.is shocking beyond words", Prime Minister Narendra Modi said on Twitter.