He was arrested on the charges of unauthorised entry and was later remanded by the Negombo magistrate till May 15, police said.
Security has been beefed up in Sri Lanka as the army increased its deployment by 1,300 to 6,300.
The blasts -- one of the deadliest attacks in the country's history -- targeted St Anthony's Church in Colombo, St Sebastian's Church in the western coastal town of Negombo and Zion Church in the eastern town of Batticaloa around 8.45 am (local time) as the Easter Sunday mass were in progress.
While 10 persons from Karnataka have been confirmed dead, at least seven of them are said to be JD-S workers.
Several people succumbed to their injuries sustained in the blasts, taking the death toll to 359.
The blockade of Facebook and WhatsApp has been imposed from mid-night following violent incidents between the minority Muslim and majority Sinhalese communities, officials said.
Polls opened at 7 am local time and would close at 5 pm with some 12,845 polling stations being set up throughout the country for 15.9 million voters, who will choose a successor to President Maithripala Sirisina.
The input was sent through diplomatic channels to the island nation after a through investigation pertaining to the IS case in Coimbatore was carried out by the NIA.
Sri Lankan foreign ministry said that the number of foreign nationals who have been killed in the attack rose to 36.
'A fragile Sri Lanka will have a serious impact on the security of India.'
A tribunal of the Delhi high court has confirmed the extension of a five-year ban imposed on Islamic Research Foundation, set up by fugitive Zakir Naik who is accused of inspiring Muslim youths in India and abroad to commit terror acts.
Though dubbed as the "war hero", the role of Rajapaksa in ending the conflict with the Liberation Tigers of Tamil Eelam with the death of its supremo Velupillai Prabhakaran in 2009 is quite divisive as he stands accused of violating human rights, a charge he vehemently denies.
A Dubai-based Indian couple had a narrow escape in the Sri Lanka blasts.
The attorney general instructed the authorities to charge them for their failure to prevent the Easter terror attacks.
Authorities also released photographs of six suspects, including three women, wanted for their involvement in the attacks and sought information regarding them from the public.
The NIA on Thursday filed a chargesheet against six people in connection with the October 2022 Coimbatore car bomb blast, saying the prime accused of the terrorist attack was "inspired by ISIS ideology".
Sangakkara, who was appointed the first non-British president of prestigious Marylebone Cricket Club (MCC) earlier this month, expressed shock at the communal riots in the island nation.
Abu Bakr al-Baghdadi last appeared in 2014 during a sermon at the Great Mosque in Mosul. The speech marked the rise of self-declared "caliphate" of IS in Iraq and Syria.
Prime Minister Narendra Modi congratulated Rajapaksa and said he looks forward to further deepen relations between the two nations.
Police said they have seized a large haul of explosives, a drone and a banner with the Islamic State logo.
'If Ranil Wickremesinghe starts repressing and suppressing the protesters who represent the people, that will pose a danger for him to continue in office.'
'The NIA has shared with states concerned a list of 125 suspected activists who have close links with the JMB leadership'
He also reiterated India's strong support in the fight against terrorism with Sri Lanka, which saw the country's worst terror attack on Easter Sunday.
The perpetrators of the killing of a pharmacist in Maharashtra's Amravati might have been 'self inspired' by the violence carried out by the dreaded Middle East group Islamic State (ISIS) and the investigators are trying to ascertain if they have links with any terror outfit, officials said.
After carrying out searches at seven locations in the city on Wednesday, the NIA had detained six people for questioning and arrested prime accused Mohammed Azarudeen, who was a Facebook friend of Sri Lankan Easter Day blasts mastermind Zahra Hashim.
Driven from its self-styled caliphate in Iraq and Syria, Islamic State is down but not out. Where once they confronted armies, the extremist Islamist group's adherents have now staged hit-and-run raids and suicide attacks. In some cases, the group has claimed responsibility for atrocities, including the bombings of churches and hotels in Sri Lanka that killed at least 253 people. Its involvement is not always proven, but even if the link is ideological rather than operational, Islamic State still poses a security threat in many countries.
The reports suggested six members of the terror outfit infiltrated into the state by sea from Sri Lanka and moved to different cities, including Coimbatore, according to the police.
There is only one perpetrator, Hamas. It is a terrorist organisation. It is obscene to argue that until the Palestinian question is solved, anybody has the right to use terrorism as an instrument of policy, argues Shekhar Gupta.
The polling body said that Prime Minister Narendra Modi did not violate the model code or its advisory on armed forces in his speech in Varanasi. It also found nothing wrong in his comments made in Nanded, Maharashtra where he reportedly dubbed the Congress as a 'sinking Titanic'.
'Should the new ISIS leadership opt for a consolidation, the Afghan-Pakistan border would be an attractive place,' warns Brigadier S K Chatterji (retd).