According to the police summary of facts, the 10-month-old was "happy and content and was rolling around using both hands" at his childcare centre on February 5. However, when he was returned to the centre on February 7 - after it was closed for Waitangi Day - the childcare staff noticed he was unusually unsettled.
On Waitangi Day, Harris had drunk pre-mixed bourbon and cola in his garage area from about 2pm, the police summary states.
"A childcare assistant believed [the baby] was in some sort of pain due to the fact that he would not stop crying. It was noticed [his] left arm was floppy and fell to his side."
Childcare staff took the infant to an accident and emergency centre in Takanini, where his arm was x-rayed and found to be broken. He was sent to the Kidz First children's hospital at Middlemore.
Another x-ray found his shin bone was broken. A full skeletal x-ray uncovered the extent of the rest of his injuries.
A specialist paediatrician believed the injuries had been inflicted intentionally, the police summary said.
Harris denied the charge to police and blamed his children for being rough.
A police spokeswoman said the baby was expected to make a full recovery.
Harris appeared in Manukau District Court yesterday and was refused bail. He is scheduled to reappear next month.