Islamic State said through its AMAQ news agency that Hussain "was a soldier of the Islamic State and carried out the attack in response to calls to target the citizens of the coalition countries".
Hussain lived with his parents in the building, and neighbors said the family was Pakistani.
Police chief Mark Saunders says investigators don't know a possible motive yet.
Public Safety Minister Ralph Goodale said that there is no risk to national security following the attack. Sources say Toronto Police, the OPP and the RCMP have all had an interest in the now-deceased shooter.
Toronto police identified the two victims as 10-year-old Julianna Kozis and 18-year-old Reese Fallon.
The family disclosed that the 29-year-old had struggled with "severe mental health challenges" for years, adding that medication, therapy and other interventions were unsuccessful. Police say they located the man nearby, on Bowden Street, and that shots were exchanged. "We stand by the victims, the courageous first responders and all the communities affected by this tragedy".
Mourners could be seen carrying signs that read #DanforthStrong and other messages of resilience, showing the world that this vicious attack on The Danforth won't define who we are as a city.
Canadian crime expert Steve Ryan told network CTV that video showing the way Hussain held his gun while calmly aiming and firing suggests he had firearms training.
Rather, the source said, Hussain remained on the periphery of gang life - well-connected enough to get his hands on an illegal handgun (the weapon he used was illegal and he had no Possession and Acquisition Licence), but either he was not in sufficiently deep that he acquired a serious record or he was lucky enough to avoid it.
Councillors approved a motion to urge the federal government to forbid the sale of handguns in the city and for the province to outlaw the sale of handgun ammunition in Toronto.
Markham Mayor Frank Scarpitti said the city would lower its flags to honour the girl and that the community north of Toronto had been shaken and hurt by this "senseless act of violence". It passed on a 41-4 vote.
The deadly melee in the popular Toronto neighborhood has led to increased scrutiny of the city's gun violence.
Ali Demircan says he was sitting on a bench on the northwest corner of Logan and Danforth avenues on Sunday night with three of his friends when he heard what he first thought were firecrackers, then quickly realized an active shooter was in his midst.
"It still feels surreal", Sukhera said, "like it's a dream and I'm going to wake up and it didn't even happen". Hussain was shot dead, but it's unclear whether it was from his own gun or a bullet from police.
Fallon was expected to attend a nursing program at McMaster University in the fall and one of her former teachers said she aspired to become a mental health nurse.
Gazidis has been Arsenal's chief executive since 2009, but his influence at the club has never been bigger than now. Gazidis is also in Singapore with the team this week, and Emery said the two talk "every day".
This week the BRICS business council are holding a summit to chart a way forward on business and trade with the five countries. After the opening ceremony President Ramaphosa announced that China had promised investments worth $14.7bn into South Africa.
Unable to find a way around the Israeli blockade, a zoo in Gaza painted two donkeys to look like zebras in 2009 . The zoo denied the allegations, with the zoo's director, Mohamed Sultan, insisting the zebras were not fakes.
The FBI has released an application to conduct surveillance of an American under the Foreign Intelligence Surveillance Act. He first contacted the Trump campaign in 2015 before meeting Trump's campaign manager, Corey Lewandowski, in January 2016.
This, says Ag Secretary Sonny Perdue, will let the president work on "long-term trade deals" he vows will make up for losses. And the farmers will be the biggest beneficiary . "It doesn't make me feel any better", the operative said.
Roseanne Barr talks with Fox News talk show host Sean Hannity while being interviewed during a taping of his show Thursday in NY . The comic also claimed a recent video she released on YouTube, saying of Jarrett, "I thought the b**** was white", was a joke.
Critics say the law undermines another element of Israel's identity - its democracy. "This is our state - the Jewish state". It also stripped the Arabic language of its official status , giving it instead a vague " special status " designation.
Profit dipped 9.3 percent to $3.2 billion in the second quarter after accounting for the European Union fines , the company said. Google gives Android to smartphone makers for free, part of the reason it's the most popular mobile operating system.
Those pulses reflected 29 sets of radar samples that created a map of drastic change in signal nearly a mile below the surface. Several craft have taken radar measurements and have arrived at no conclusive evidence of liquid water.
The $522 million prize is the 11th largest in USA history for Mega Millions and the game of its older sister, Powerball. The winning numbers in Tuesday's Mega Millions draw were: 1, 2, 4, 19, 29, and Mega number 20.
GOP Lawmakers Launch Bid to Impeach Rod Rosenstein
Deputy Attorney General Rod Rosenstein will not be impeached by the Republican party, at least not right now. "I think Mr. The president has denied any collusion with Moscow took place, and has characterized the probe as a "witch hunt".
May says she will lead Brexit talks from now on
Former Brexit secretary David Davis has urged the Prime Minister to "reset" her negotiating strategy. That has infuriated Brussels , which insists that the bill is simply a settling of accounts.
Trump hails dismantling of North Korean missile test site
Lee said, if North Korea dismantles the entire Sohae launch area, it would reduce greatly the country's missile threat. Real progress, Keane said, would include North Korea complying with previous knowledge from USA intelligence services.