"There've been four terrorist acts in succession and they carried away many human lives.
"In the light of it, the Foreign Ministry recommends Russian citizens to refrain from trips to Sri Lanka until the situation in that country returns to normal," the source said.
The recommendation could strike another blow to the island's tourist industry which has already been hit hard by a slow down in arrivals from traditional markets in the West.
Russia, where incomes are rising because of record oil prices, and Eastern Europe, have been emerging as new tourism markets for Sri Lanka in recent years.
Till now Russian and East European tourists have been seen as less fussy than Western tourists as they have been used to violence in their own countries.
The Tamil Tigers have stepped up attacks on civilians in Colombo and the isla