At least 26 people were confirmed dead and many more are missing when a railway bridge under construction in north-eastern India collapsed, officials said.
The tragedy happened near the town of Sairang in Mizoram.
40 workers were there when a portion of the bridge fell, local media said.
The reason for the occurrence is unknown, but an inquiry has been launched by the railway administration. So far, three individuals have been rescued.
One of the wounded workers had to be lowered from the top of one of the bridge’s 100-metre (328-foot) pillars.
The event occurred on the Kurung River, around 20 kilometres (12 miles) from Aizawl, Mizoram’s capital.
In a statement, Prime Minister Narendra Modi’s office said, “All possible assistance is being provided to those affected.”
The government would reimburse the next of kin of those slain 200,000 rupees (£1,900; $2,400).
All of the casualties are from West Bengal, railway officials said.
“Words cannot express the depth of our sorrow and sympathy for the families affected by this tragic event,” said Lalchamliana, Mizoram’s Home Minister.
The Khamrang-Sihhmui railway line will be 51 kilometres long and is expected to be finished in December, nearly two years after construction began.
In India, accidents on these types of building sites are not rare.
In October of last year, a pedestrian suspension bridge in India’s western state of Gujarat collapsed, killing over 140 people.
