The dead included at least eight foreigners, including three Americans, according to doctors in Colombo who spoke on the condition of anonymity.
A second explosion was reported at St. Sebastian's Church in Negombo, a Catholic majority town north of Colombo.
"To see an attack in Sri Lanka while people were in churches and at hotels is devastating", she said in a written statement.
"Terribly saddened by terrorist attacks on Sri Lankan worshippers during Easter".
"Heartfelt condolences from the people of the United States to the people of Sri Lanka on the disgusting terrorist attacks on churches and hotels", he tweeted.
At least 138 people were killed and hundreds more hospitalized from injuries in near simultaneous blasts that rocked three churches and three luxury hotels in Sri Lanka on Easter, a security official told The Associated Press, in the worst violence in the South Asian country since its civil war ended a decade ago.
Panneerselvam condemned the mass killings by suicide bombers in Sri Lanka on Sunday. It is understood at three police officers were killed in the blast.
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Victims of the Easter bombings in Sri Lanka were laid to rest on Tuesday, with one funeral procession following another all day. Islamic State has claimed responsibility for the bombings, though as yet there is no evidence to back this up.
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Giants: Are off Monday and wrap up an eight-game road trip on Tuesday when begin a two-game set in Toronto against the Blue Jays. Tucker won the game with his first career home run just before the contest was delayed and ultimately called because of rain.
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The peak of the shower is expected to occur Tuesday morning, with another opportune viewing time frame between 3 a.m. and 4 a.m. The Lyrid meteor shower is coming to a sky near you Monday night, though a bright moon may interfere with your sky watching.
A set of explosions occurred in a church in Batticaloa, St. Anthony's church in Kochchikade (Colombo) and St.Sebastian's Church in Katuwapitiya. An official at the hotel told AFP the blast there had hit the restaurant, and reported at least one person had been killed.
As a precautionary measure, authorities have temporarily blocked access to all social media platforms across the island, saying the measure was aimed at preventing "incorrect and wrong information being spread".
The industry emerged as a cornerstone of Sri Lanka's economy as the country sought to rebrand itself after the end of a 26-year civil war in 2009.
Sri Lanka's government imposed a nationwide curfew on Sunday that police said would go into effect immediately and would last "until further notice", in the wake of coordinated attacks. One of the churches, St Anthony's Shrine, and the three hotels in Colombo, are frequented by foreign tourists.
Emirates Airline issued an advisory to all passengers departing Sri Lanka.
Harsha de Silva, Sri Lanka's Minister of Economic Reforms and Public Distribution, said that there have been "many casualties including foreigners".
Just over 6 percent of Sri Lanka's population of 21.5 million self-identify as Catholics, with the vast majority of the country being Buddhists.
"My thoughts are with the bereaved families and prayers with the injured", Modi said in a statement.
The Kingsbury Hotel was also attacked.