At least 39 people were killed and 50 seriously injured after the train derailed in the Indian state of Andhra Pradesh, J P Mishra, chief public relations officer of East Coast Railway, told CNN.
He said a total of seven coaches left the tracks near Kuneru station.
"Besides the engine, the luggage van, two general coaches, two sleeper coaches, one AC three tier coach and an AC two tier coach derailed," Mishra told CNN affiliate News 18.
The cause was unknown.
The derailment comes only a few months after India's deadliest rail accident since 2010 -- a tragedy that once again pulled to the fore the issue of how the country's vast rail network is funded and maintained.
Last November, at least 148 were killed
in the early hours of Sunday morning when a packed train traveling from the central city of Indore to Patna in the north east went off the track.
"All of a sudden there was a massive jerk," said one survivor, Ravindra Pathak at the time. "Our heads collided with the roof of the carriage."
In the wake of the accident, former Indian rail minister Dinesh Trivedi told CNN the Indian railway system needs a "generation change."
"The present system has outlived its utility," Trivedi said.
Lifeline of a nation?
Often called "the lifeline of a nation," India's extensive rail network runs 12,000 trains a day and the full-length track could circle the globe over one and a half times.
It carries more than 23 million passengers daily, the equivalent to moving the entire population of Australia, and connects 8,000 stations across the subcontinent.
It's also one of the oldest train networks -- built roughly 163 years ago by the colonial British government -- and is chronically underfunded
. The system is often criticized for being inefficient, overburdened and unsafe.
"The system is over stretched, overstressed and has a direct impact on the safety of the operations in running trains," says Debolina Kundu, associate professor at the National Institute of Urban Affairs.
She says that, to earn revenue, new trains are continuously being introduced, but proper care is not being taken to replace the "over-aged" rolling stock. And the problem isn't just with the trains themselves, but how the tracks are being maintained.
"Most of the bridges and culverts [tunnels] have outlived their lives and become weak."
She told CNN that before introducing more trains and increasing the frequency of services, in her view, there should be a proper survey of "the capacity of the infrastructure to bear the additional stress."
"Priorities of investment have to be made," she says.
Accidents are all too common.
According to data released by the National Crime Record Bureau
, a staggering 27,581 people died in rail accidents in India 2014, many of whom perished after crossing the vast swathes of tracks that border communities, homes and villages.
Local people regularly cross the lines where it's most convenient and, even when there is a manned crossing, duck under the barriers.
Experts argue there's a need for an education drive on where and how the population should cross the tracks safely, but the reality is, with so many people living so close to the tracks, they're facing an uphill battle.
Comparatively, the percentage who die from derailments is relatively small.
And while the number of train accidents seems high compared to other countries, there has been a steep drop in serious incidents since in the early 1990s.
"The number of consequential train accidents decreased from 530 during 1991-92 to 131 during 2011-12," says Kundu.
"The continuous reduction in the number of train accidents per million train kilometers is indicative of sustained improvement in safety performance," she stresses.
A major contributor to the system's financial woes are heavily subsidized fares, which the government has shied away from increasing.
While these fares make the system accessible for millions of Indians that rely on it, the freight and goods network ends up subsidizing the passenger facilities, which experts argue leaves little left for maintenance.
Japan and Google announced major investments last year
, aiming towards India's first high-speed rail link and the introduction of Wi-fi hotspots across hundreds of stations.
And in a White Paper issued in February last year, Indian Railway Minister Suresh Prabhu readily admitted the financial shortfall thus far.
"Indian Railways has suffered from considerable under-investment during the last years," he wrote
. He acknowledged that customer satisfaction and technological improvements had suffered as a result.
"Investments in safety have also been insufficient," he added.
As part of the budget in March last year, Indian Prime Minister Narendra Modi's government promised record investments
aimed at improving safety, security and the quality of service.
But the latest crash will serve as a blunt reminder of the challenges facing his government in their attempts to deliver on this pledge.
"Despite its problems, Indian Railways is not down and out," Prabhu optimistically wrote in his White Paper last year.
"Indian Railways is perched on a precipice but is capable of flying off and attaining great heights."