Four trains collided in two accidents amid dense fog in India's northern state of Uttar Pradesh Saturday, killing at least four passengers and injuring more than 50, officials and media reports said, DPA reported.
The Gorakhdham Express rammed into the Prayagraj Express near the Panki railway station in Kanpur, 90 kilometres south of the state capital, Lucknow, railway spokesman Rajesh Dutt Bajpai said.
"The Prayagraj Express was standing near the station when the Gorakhdham Express hit it from behind due to reduced visibility owing to the fog," Bajpai said.
Senior district official A Sagar told the NDTV network that four passengers were killed and more than 40 wounded were moved to three local hospitals.
In the second accident Saturday, the Lichchavi Express and the Magadh Express passenger trains collided in the eastern district of Etawah.
Thirteen passengers, including the train driver, were injured in the collision, the NDTV report said.
Railway officials said visibility at both the sites was about 30 metres because of dense fog.
Scores of passengers were likely to be stranded at railway stations as traffic on the busy train route was suspended after the accidents.