"On April 26, 2019, the Department of State ordered the departure of all school-age family members of US government employees in Kindergarten through 12th grade. The Department also authorized the voluntary departure of non-emergency US government employees and family members", the statement reads.
The department highlighted that the US government has limited ability to provide emergency services to US citizens in Sri Lanka due to the security environment.
"Terrorist groups continue plotting possible attacks in Sri Lanka. Terrorists may attack with little or no warning, targeting tourist locations, transportation hubs, markets, shopping malls, government facilities, hotels, clubs, restaurants, places of worship, parks, major sporting and cultural events, educational institutions, airports, hospitals, and other public areas", the statement reads.
The Level 3 Travel Advisory recommends American citizens reconsider traveling to a country "due to serious risks to safety and security."
Earlier, the US Embassy in Sri Lanka issued a statement warning about the possibility of more terror attacks over the upcoming weekend.
The warning was issued in the wake of the Easter Sunday attacks, when numerous, coordinated bombings killed more than 250 people in Christian churches and top-end hotels. The authorities initially reported 359 dead, but later reduced the number, saying the calculation was complicated by the large number of dismembered bodies left by the blasts.
READ MORE: US Embassy Warns More Attacks in Sri Lanka Possible This Weekend
On Monday, Interpol announced it would deploy a special team to Sri Lanka to investigate the wave of deadly bombings.
On 24 April it was reported that the FBI would assist in investigating the Easter Sunday bombings at the request of Sri Lankan government.
The Easter Sunday attacks were the worst the country has faced since the end of its 25-year civil war in 2009. Daesh* reportedly claimed responsibility for the attacks on Tuesday.
*Daesh (also known as IS, ISIS, ISIL) is a terrorist group, banned in numerous countries, including Russia.