Security camera footage shows Ty standing at the school, during which time he appears well.

Wint’s day began when he walked his two sons to Ty's older sibling’s school, Maple Leaf Public School, on the same street where Wint lived, Longford Drive, according to the agreed statement of facts.

However, between 9 and 10:30 a.m., Wint admitted he lost his temper and struck Ty more than once in the abdomen with significant force.

He was hit so hard that one doctor said the child’s pancreas was split in two.

Also, Ty suffered a “lumbar” fracture, which a doctor said occurred when Wint struck Ty so hard in the abdomen it “compressed through to his back”.

Although doctors said he could have had a “period of survival” window of three hours, nothing was done to save him.

Despite Wint knowing he caused serious injuries to his boy, he delayed calling 911 for several hours for fear that what he’d done would be discovered.

Ty was internally bleeding and had a rapidly declining level of consciousness, reports show.

Doctors said that by the end, two-thirds of the boy’s blood was found in his abdominal cavity.

Wint said at 11:15 a.m. that day he arrived at his mother, Valerie Wint’s, home with Ty.

Valerie, a nurse, said the boy “looked unwell, appeared drowsy, weak and lethargic” and would not eat.

She said she told Mario to take him to the medical clinic near her home.

Wint refused and said he would take Ty to the hospital if he wasn’t feeling better after lunch.

He admitted to lying to his mother about what was wrong with Ty, suggesting he was “cranky, tired or teething”.

He left Valerie’s home at 11:45.

An hour later, Mario picked up his other son from school.

The surveillance video showed Ty not moving and “lying in his stroller with his arms extended”.

Valerie texted Mario at 1:24 p.m., asking Mario if Ty was “OK” and received the reply, “So far, yes. He was lively when he seen his cars, seems to be OK now. I’m making home some soup”.

When Wint returned home, he said he had a shower with Ty, played video games with his other son and then began making lunch.

When he went to check the boy again, he said he found Ty “unresponsive” on the bed.

Wint called 911 between four and 5-1/2 hours after striking the boy, but when authorities arrived, Ty had no vital signs and was pronounced dead at 3:15 p.m. after he was taken to Southlake Regional Health Centre.

Ty experienced “significant pain” and his devastating internal injuries would eventually lead to his death, doctors said.

Wint lied to 911 operators and police, who arrived at his door, and investigators afterward.

He told Const. David Elford, the first emergency responder to arrive, that he found Ty this way after he began suffering from a bit of a cold. During CPR, Wint said Ty “was spitting up mucus”.

He later told Det. Evangelos Nassios that Ty had a “runny nose” before showering with him and putting him to bed.

After alleging that he played video games with his other son for 20 minutes, he said he found Ty moaning and did not look well, at which point he began CPR.

Wint further advised that Ty had fallen down some steps on his stomach days before after his coat string got caught in the steps, but that he had been fine afterward, according to the statement of facts.

Wint’s friends mounted a huge effort to secure his release, launching a Facebook page to prove his innocence and implying the boy had choked to death.

Comments on that same page have now turned largely against Wint.

Wint will be sentenced May 13.