Kayrim had been on a field trip with 12 other children to Malcolm X Park with a private camp run by his grandmother.
His grandmother says he was last seen around 5:30 p.m. Monday and by 6:10 she realized he was gone.
A witness claimed to have seen Kayrim being dragged away by a stranger, leading police to believe the child had been abducted. They even issued an Amber Alert.
At this point, police believe that Kayrim simply wandered onto the school bus from the playground when no one was looking.
Police say they were under the impression Kayrim was driven in his grandmother's van and weren't told there was a school bus involved until they interviewed the grandmother again around 3:00 a.m.
That information led police to a school bus yard in the 4300 block of Rising Sun Avenue. Officers then found Kayrim sleeping inside a bus there. He was unharmed, police say, just a little "dazed and confused."
There are guard dogs in that bus yard but, fortunately, the bus was locked.
He was reunited with his parents at Southwest Detectives around early Tuesday morning.