WARNING: SOME GRAPHIC IMAGES
A MAN who allegedly stole Australian Rugby boss Bill Pulver's BMW before stabbing three men at a northern beaches gym has ended his siege with police.
About 4.45am this morning Ricky Kincheila, who was released from jail in January, came down from the roof of a Tighes Hill property following a 17-hour standoff.
He was assessed by paramedics before being taken to Newcastle Police Station. He is expected to be questioned by police later today.
The standoff came after an alleged crime spree which stretched from Sydney to Newcastle.
About 8pm on Monday, Kincheila allegedly stabbed three men at Vision Personal Training at Brookvale, after walking behind the counter and asking to join a boxing club.
It will be alleged he punched trainer Todd Maas and then stabbed the three gym clients.
The three stabbing victims have been revealed as 26-year-old Nicholas Worsley, Daniel Fernandez, 29, and David Burns, 31, who work out regularly at the gym.
Mr Fernandez, 29, was cut eight times in the neck and ear as he tried to subdue the "strange man" while his friends were stabbed in the torso and arms.
Mr Worsley staggered into a nearby carpark before police rushed to his aid, while Mr Fernandez fell bleeding on the ground where he was attacked.
"I just heard a man yelling ... 'help, help, help'. I noticed this guy was bleeding quite badly from the neck," a neighbour said.
Police claim Kincheila fled in the BMW he had allegedly stolen from a Crow's Nest car wash hours earlier and headed to Newcastle, where police say he robbed two service stations.
In Sandgate he allegedly used a knife to force open a register, which he then jumped on repeatedly before tearing it from the counter and running off about 9.45pm.
Just 15 minutes later he allegedly robbed another service station on the same street at knifepoint.
Police spotted Kincheila just after 11am yesterday clambering on the roof of a Tighes Hill unit complex.
Despite his dangerous position, a shirtless Kincheila fell asleep at one stage and also asked to speak to his girlfriend and his father, who are understood to live in the Newcastle area.
Witnesses said he looked calm during the standoff.
Meanwhile Mr Worsley's fiancee Anneleise Henderson, 25, said the gym attack was "totally random".
"They were finishing off their session when this ... strange guy came in," Ms Henderson said.
"He punched one of the guys and then the knife appeared. Then he went to town. They didn't realise they were being stabbed. They all ran out."
A close friend of Mr Fernandez said: "The guy punched the trainer and then Dan tackled him."
"When he did, the guy pulled out a six-inch knife and stabbed him ... he is super lucky, it could have been so much worse."
Mr Worsley had been released from hospital while his two mates were still hospitalised in stable conditions.
ARU spokesman Michael Earsman said Mr Pulver, whose daughter Maddie was the victim of the collar bomb extortion ordeal in 2011, was unaware his car had been pinched.
"It was just sitting in the car wash and the bloke's jumped in it ... Bill wasn't even there," ARU spokesman Michael Earsman said.
One Vision member, who did not wish to be named, was in shock when she arrived to train today only to learn a gym partner was a victim of the attack.
"I train with him all the time, he's a really nice man ... a hard worker," the woman said of Mr Fernandez.
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