The three-year-old male big cat was knocked down by a goods train near Badhada village when it was crossing tracks, the official said, adding the train was on its way from Savarkundla to the port town of Pipavav.
The area is located near Gir Wildlife Sanctuary.
"The injured lion lying near the railway tracks in Badhada village was first spotted by a farmer who informed us. We rushed a team and tranquillised the feline and brought it to our animal care centre in Jasadhar village where it succumbed to injuries," said Savarkundla Range Forest Officer RJ More.
"The lion had not sustained any external injuries but was grievously injured internally. We treated it to the best of our capacity but could not save it," the officer said citing the postmortem report.
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