Class S13 967-968 went on a trial run to Kankesanthurai as Vavuniya Intercity train(4003) today(2019/08/27).
This trial is a clear hint of the new Intercity train which Sri Lanka Railways is planning to operate soon. Check Read more section.
Update: Trial success (2019/08/28)
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https://slrailwayforum.com/vavuniya-intercity-extended-to-kankesanthurai