Cortese thanked people for their concern in a Facebook post on Sunday.
Cortese and his autistic son were on a train travelling through South Auckland when the trio began hurling abuse at them and snatched the iPad from Kees.
The trio got off the train at Papatoetoe, and were monitored via CCTV.
Kees was "agitated, panicking, and crying", Cortese wrote on Facebook after the incident.
The two took regular train trips to make Vlogs (video blogs) on the iPad, Cortese said.
Police posted on Facebook this afternoon that they had reunited a young boy with his iPad, saying "sometimes the best part of the job is putting a smile back on the faces of victims".
Kees was also given a tour of the Otahuhu Police Station this morning when his iPad was returned, according to the post.
A police spokeswoman said after the incident they were not able to comment due to privacy concerns.
