Crocodile Hunter, Steve Irwin, has died after being struck by a stingray barb in Queensland. Mr Irwin, 44 died after the stingray barb went through his chest while he was shooting a documentary off Port Douglas. The Queensland Police Service has confirmed Mr Irwin's death. In a statement, it said Mr Irwin collapsed after being stung by a sting ray at Batt Reef, off Port Douglas, about 11am. After being struck, Mr Irwin's crew called for medical treatment and the Emergency Management Queensland Helicopter responded, but he was dead before the treatment arrived. The statement said Mr Irwin's family has been advised. His American-born wife Terri is reported to be trekking on Cradle Mountain in Tasmania. A spokesman for the Queensland Ambulance Service said officers attended the scene on Low Isles via helicopter at 12.04pm today and arrived back in Cairns at 12.53pm. "The area it was delivered to was the problem. A sting ray hit to the chest is a big problem," he said.