The wait was only supposed to be a few minutes.

Abdi Warsame was sitting in a car with his five- and six-year-old boys, while his friend was finishing his banking in Mogadishu, Somalia, on Saturday.

Moments before, they'd bought a few pieces of watermelon from a woman, one of many street vendors making their living selling to the thousands who pass through the bustling intersection outside the Safari Hotel every day. A boy, no more than 16, came by, offering to hand wash the car.

That's when the blast hit, an explosion Warsame would later learn was the single deadliest Somalia had ever seen. He'd also learn he was less than 100 metres from the epicentre — and just how lucky he was to escape with his life.

At that moment, though, all he knew was that he had to run. The sound was deafening and Warsame's only thought was to grab his two boys, one in each arm, and find cover.

"The entire ground just felt like it was divided into half and I felt the glass shatter and everyone was just running away from buildings collapsing," the Toronto father of five told CBC News from Mogadishu, where he remains with his sons, safe at a friend's home.

'Young men collapsing in front of me'

"I was running for my life and for the lives of my two little ones — my precious children," Warsame said. Gunshots were going off all around them as panic set in, no one knowing who to trust or if another explosion was imminent. All the while Warsame ran and kept on running until he got to a hospital.

I can take my sons back to Canada.... The little boys in Somalia don't have that. The mothers in Somalia don't have that. - Abdi Warsame

The death toll from Saturday's truck bombing is still rising, now exceeding 300, officials say. As the numbers climb, despair and horror hang over Somalia, whose president, Mohamed Abdullahi Mohamed, has declared three days of mourning. The government blames the al-Qaeda-linked al-Shabaab extremist group, which has not commented.

Abdi Warsame, a Toronto father of five, had run from the scene of the explosion with his sons, ages five and six. (Submitted by Abdi Warsame)

There are an estimated 500 to 1,000 Canadians currently living in Mogadishu, Global Affairs Canada says. So far there are no reports of Canadians hurt or killed in the attack, but the department says it is ready to provide consular assistance to citizens as needed.

Fortunately, neither Warsame nor his children were seriously hurt. His youngest sustained just a cut. So it wasn't until he arrived at the hospital that the sheer horror of it all became clear.

"There were young men just collapsing in front of me. I could see one holding his tummy, I could see this humongous hole … I could literally see his ribcage," he said, recalling trying to shield his boys' eyes as the man fell to his knees and died in front of them.

He'd soon find out his friend at the bank was OK. But another friend was killed in the blast.

Attacks 'meant to instil fear'

Half a world away in Toronto, Samiya Abdi was frantically texting her friends as news of the explosion started flashing on her television and social media feeds. All but one, a friend who worked with the Ministry of Humanitarian Affairs, responded.

Abdi soon learned he was among the dead.

Abdi was born in the country's capital, Mogadishu, but her family moved to Canada when she was just a baby as tensions in Somalia were escalating.

Samiya Abdi had just visited her home country for the first time since she was a baby a few weeks ago. She had been in the very spot in Mogadishu where the bombing attack occurred. (CBC)

She'd just been to her home country, for the very first time since the family left, to visit a few weeks ago and had been at the very spot where the attack took place before it was reduced to rubble and devastation.

Intersection 4, she said, was beautifully paved, bustling with young people at any time of day or night, young men playing guitars singing old romantic songs and restaurants buzzing. A sign in bright lights with one of the government's official slogans, "Nabad iyo Nolol," meaning "Peace and Life" stood there when she'd visited.

That sign now serves as a symbol of what the attackers tried to destroy, she told CBC News.

"It is intentional for it to take away that hope and to make people think that Mogdadishu is not a safe city.… It was to instil fear into the hearts of citizens, regular citizens, young people and mothers," Abdi said.

Toll of attack may never be known

Hamilton nurse practitioner, Hodan Ali, has been working in primary care in Mogadishu for the past two years and told CBC Radio's As It Happens that nothing could have prepared her for the carnage she saw.

"People turned into charcoal," she said. "I know colleagues who have perished there and their remains are not even present, because of just the impact of the explosion."

Somalia may never know the true death toll from the attack, she said.

With his children safe and sound, thoughts and images flash through Warsame's mind: watermelon, the boy who offered to hand wash the car, his sheer luck and gratitude that he can call Canada home.

A picture taken on Sunday shows a general view of the scene after the explosion of a truck bomb in the centre of Mogadishu. (Mohamed Abdiwahab/AFP/Getty Images)

And when he heard that the famous Toronto sign outside city hall would shine in blue and white in honour of the victims, Warsame became emotional.

"Most of the people that lost their lives were ordinary citizens. They didn't have the privileges that I have as a Somali-Canadian.… I can take my sons back to Canada," he said. "The little boys in Somalia don't have that. The mothers in Somalia don't have that."

Back in Toronto, Abdi is trying to find hope amid the horror.

"But before we look for solutions we are in a place of mourning," she said. "I don't want to use the fake idea of resiliency because we do not need to be resilient — we do not deserve this kind of attack."

"In the midst of pain and in the midst of grief and in the midst of prayers … I am hopeful for my people."