Give up, son tells jailbreaker dad

Kevin Polwart's son Darryn lives in the US and has a daughter, Jaz.

The Iraq-War-veteran son of escaped prisoner Kevin Polwart has told his "Peter Pan" father to take his punishment like a man and give himself up.

"Stop the BS. For as much as you tried to repair before through letters, you are burning to the ground now because of this," Darryn Polwart told his father through the Herald from Texas, where he is a US Army combat engineer who has spent three years in Iraq.

He said police wouldn't catch the 49-year-old, on the run from Auckland Prison since last Wednesday, as he had contacts and the right skills for hiding.

"He's very smart, unfortunately, at doing bad things. I don't want to point out how skilful he is because I don't have respect for what he does, but he can do it."

As a former contractor and builder, his father would have had no trouble cutting through a steel fence at the Paremoremo jail.

"If he decides to stay gone he probably could," Darryn Polwart said. "The only reason they got him last time was because he turned himself in."

Detective Senior Sergeant Kim Libby of North Shore police said all departure areas were covered. But he did not know Polwart was a trained helicopter and fixed-wing pilot, as revealed by his son.

He said there was only so much police could do in tracking Polwart, and it was basically a matter of waiting for him to "rear his ugly head".

Darryn Polwart said the scribbled "catch me if u can" dare and sketch of a cartoon rabbit near his father's escape point was typical of his "child-like outbursts against a fair punishment that was well deserved".

"It's all a game to him - everyone else pays for it upfront while he runs around in a nice little game of duck, duck, goose, goose."

While "Kevin" was his father and always would be, he lost the right to be "Dad" a long time ago when he "prioritised his selfish agendas over the duties he had to his children", Darryn Polwart said.

He has not been back to New Zealand since his family moved to the United States when he was a teenager. He is engaged to an American, Lauren McQueen, and has a 3-year-old daughter, Jazlyn.

"My mother tried for years to keep us on track despite our questions about our dad ... She did the best she could, and eventually, with the support of my [American] stepdad, moved us to the US," Darryn Polwart said.