However, the thief broke loose and fled, leaving behind the bicycle which he had been riding from the post office eastern end of the shopping centre, which was deserted apart from Mr Donoghue and Mr Manning, the victim and the thief, and a man and a woman estimated to be aged 50 to 60.
The offender, wearing a grey-and-white checked hoodie and a baseball cap and thought to be a male Maori in his late teens or early 20s, did not appear to be injured as he fled the way he had been heading, to the south and out of sight into Nuffield Ave.
"My mate wasn't injured," Mr Manning said. "But he did have a bit of a sore hand, from when he gave a couple of smacks in the head."
Police were called while the woman was comforted in a nearby cafe.
Yesterday, Senior Sergeant David Sutherland of the police Eastern District command centre said no one had been arrested and police were still seeking the offender.