Forty suspects, including the driver of a van allegedly used by the suicide bombers, were arrested in connection with the multiple attacks.
Sri Lanka's military said the gunfire and later suicide blasts killed 15 people, including six children.
In the following days, the country unleashed a sweeping crackdown on potential suspects in the attacks, arresting over 70 people all over the country and facing off with militants in anti-terrorist raids.
Sri Lankan authorities are also hunting for around 140 followers of the jihadist group Islamic State, which has said it was involved in the bombings, but has not given details.
National Thawheed Jammath (NTJ) leader Zahran Hashim, the mastermind behind the attacks, was killed inside the Shangri La hotel were he detonated himself.
Their political rivalry and government dysfunction are blamed for a failure to act upon near-specific information received from foreign intelligence agencies that preceded the bombings targeting three churches and three luxury hotels.
"What happened last Sunday is a great tragedy, an insult to humanity", he added.
On Saturday, President Maithripala Sirisena formally outlawed two Islamist extremist groups suspected of carrying out the Easter attacks. "If they (the authorities) are honest, they must have a thorough investigation", he said.
OM : Rudi Garcia commente la rumeur Milan
Ce qui porte actuellement à ses yeux, c'est de finir sur le podium avec l'écurie phocéenne. Il faut que je mène l'OM au plus haut dans le classement, le reste m'importe peu.
Kajol and KJo in Kapil’s house
Who does that! I felt so humiliated, I walked out of the party as I have never felt so insulted in my life". The two recently appeared on a popular television show and spilled the beans about one another.
"We pray that in this country there will be peace and co-existence and understanding each other without division", he said.
The government, crippled from a long political crisis between the president and prime minister past year, promised swift action to capture militants still at large.
Many lit candles and placed them in a makeshift memorial for the victims. "Some have died", Wickremesinghe said in a statement. Police said Hashim's young daughter also survived.
Police said they had arrested 48 suspects over the last 24 hours as checkpoints mounted by all of Sri Lanka's security forces sprung up across this country of 21 million people.
IS, which claimed responsibility for the Easter bombings, said the three men who blew themselves up at Kalmunai were its members. She said Zahran's extremist views had opened a rift between her and her brother.
Presidential spokesman Dharmasri Ekanayake said the ban, issued by decree under emergency powers, would allow the government to confiscate any property belonging to the two organisations. Most Sri Lankan Muslims practice a liberal form of the religion, with only a small percentage of women wearing a full face veil known as niqab.
With the burqa ban, Sri Lanka joins the group of nations in Asia, Africa, and Europe that have done so in the interest of preventing terrorists from using the burqa to evade police or hide explosives. The raid took place in the eastern town of Kattankudy, just a day after President Sirisena outlawed NTJ and another group, Jamathei Millathu Ibrahim, under new emergency laws.
The four-time LPGA Tour victor tied for third last week in Hawaii for her third top-three finish of the season. Quebec City's Anne-Catherine Tanguay (73) and Calgary's Jaclyn Lee (76) were tied for 41st at 1 over.
Hardik Pandya's 91 off 34 may have ended up in a losing cause, but Smart Stats says it was the best innings of the match. The Australian hit a boundary in every over after that before notching up his fourth fifty of the season in 28 balls.
As a safeguard, such orders, to be issued case-by-case, could be challenged and appealed through the city's vaunted legal system. Government officials say the changes are needed to plug long-standing legal loopholes.
Conservation groups have petitioned hard for this inclusion after the number of giraffes has fallen drastically across the globe. They increasingly are targeted by wealthy trophy hunters as other big-game animals have become scarcer.
The resolution was ultimately defeated, but not before a passionate debate broke out among members - with escalating rhetoric. Supreme Court after the court heard oral arguments in the Commerce vs. "We will not have further comment at this time".
Police are now looking for a man who was found via CCTV footage as he was trespassing on the school grounds. The person who planted the blades was able to identify the prince's seat from the name tags on each desk.
Panthers draft Dennis Daley in sixth round
He started all 22 games over two seasons at West Virginia, producing 34 touchdowns his first season there. He didn't play in the national championship game loss to Clemson because of a hamstring injury.
Fortnite Black Widow Skin Now Available in Item Shop
One that players can get without spending any V-Bucks is a Quinjet Glider that's earned by competing event challenges. It costs 1,500 V-Bucks and comes in two variants: one with red hair, and one with blonde.
Elliott puts Chevrolet into Victory Lane
I knew it was flipping and was just hoping I wouldn't get any closer to the catch fence so yeah, it was just a little bit scary. Elliott is trying to follow in the path of his father, Hall of Famer Bill Elliott, who won a pair of Cup races at Talladega .
Nadal advances in Barcelona after dropping set to Mayer
The second-ranked Nadal was coming off a loss in the semifinals of the Monte Carlo Open, when he was eliminated by Fabio Fognini . He continued to dictate the match when play resumed, serving out the set and breaking Ferrer's next service game.
USA envoy, Ghani push 'intra-Afghan' talks: palace
Prime Minister Khan stated that Pakistan was dismayed by the surge of violence in Afghanistan from all sides. Media reports say Pakistan is playing a vital role in peace talks between the Taliban and the US.