A passenger train traveling from Mysore to Darbhanga collided with a stationary goods train in Tiruvallur district, near Chennai.
The train mistakenly entered a loop line instead of the main line, causing at least 12 coaches to derail and leaving several passengers injured.
According to the Tiruvallur District Collector, the train was carrying 1,360 passengers.
Nineteen passengers were injured, with four sustaining severe injuries. They were promptly taken to a nearby hospital for treatment.