Sri Lanka has temporarily put its new visa-on-arrival programme on hold due to the security situation in the island nation.
The programme was expected to be implemented from May 1 for tourists from over 30 countries.
"Investigations have revealed foreign links to the attacks and we do not want this facility to be abused," the country’s Tourism Minister John Amaratunga said in a statement.
The pilot programme was part of a larger initiative to boost tourism during the off-season period from May to October.
Meanwhile, President Maithripala Sirisena said 139 people have been identified as suspects in connection with the attacks.

Kenyan court charges 8 schoolgirls with fellow students' murder
At least 5 people killed in fire in Antwerp apartment block
Three people die in Mexico World Cup celebrations as fans crowd streets
US and Iran enter technical talks to secure peace deal, shipping restart
After Venezuela quakes, citizens lead rescues amid military theft accusations
Two dead after wildfire guts house in northern Greece
Afghanistan launches airstrikes on IS targets on border with Pakistan
Bangladesh warns of dengue surge as weather aids spread
