"Additionally, you should exercise caution and seek the advice of your tour operator or the local authorities before travelling to areas adjacent to Yala National Park."
Yala National Park has been a popular destination for Leopard safaris. The section of the park that is open to the public is believed to have the highest concentration of leopards in the world.
The park is also located at the tail end of an Asian bird migration path and the forest and its waterholes are teeming with tens of thousands of forest birds and waders at this time of the year.
The park has been hit by Tamil Tiger attacks in the past.
The travel advisory said the Tamil Tigers had also attacked a military base on the outskirts of Anuradhapura in October, with ground and air forces.
"We do not advise against travel to the city of Anuradhapura, that straddles the A12 road,