The police said the two suspects had direct links to the National Thawheed Jamaath, the terror group that Sri Lanka has blamed for the bombings that killed over 250 people.
Sri Lankan Muslim leaders have called for one united identity of the island nation while expressing solidarity with the victims of the April 21 Easter Sunday terror attacks and those affected by the recent spate of violence.
Every year the US issues nearly 1.1 million green cards, which gives foreign nationals life-time permission to live and work in the US and a path to citizenship in five years.
The H1B visa is a non-immigrant visa that allows US companies to employ foreign workers in speciality occupations that require theoretical or technical expertise.