text: Searchers are desperately combing bushland and the banks of a lake for an autistic boy who went missing there on Friday morning. Luke Shambrook was last seen leaving Candlebark Campground in Fraser National Park, central Victoria at 9.30am on Good Friday. The 11-year old was camping in the national forest with his family, and it is understood he wandered off and has not been seen since. Luke has limited speech and his family says he is probably confused, and he may not even be aware he is lost. Scroll down for video . Luke Shambrook was last seen on the national park at 9.30am on Good Friday. It is understood he wandered off and has not been seen since . They say the disappearance is completely out of character for him. A widespread search is being carried by search and rescue teams including the air wing, dog squad, local police and SES members, along with campers around the surrounding areas. Sergeant Greg Paul said the search was focused on an area of several kilometres of bushland. 'We've got a lot of searchers in the bush,' he told reporters on Saturday. 'We've also got people walking the banks of the lake.' But he outlined a serious hurdle for the search efforts, according to ABC. 'With the autistic condition, Luke might not respond to searchers, he may not even know that he's lost,' he said. 'He won't necessarily respond to his name being called, but that might change a little bit as he gets hungry maybe. The Candlebark Campground in Fraser National Park, central Victoria, where Luke went missing on Friday . A large search is being carried by a medley of search and rescue teams . Lake Eildon, near where Luke went missing: Police say conditions are favourable for his survival overnight, with warm temperatures through the day . Sgt Paul said there were hundreds of other campers in the area over the busy Easter period, so there was a chance someone else could spot Luke. Police also said conditions are favourable for his survival overnight, with warm temperatures through the day. Luke is described as being of medium build, about 150 cm tall with olive skin, brown hair and brown eyes. He was last seen wearing a black windcheater, black t-shirt, grey track-pants, grey boots and a scarf. Sergeant Greg Paul said the search was focused on an area of several kilometres of bushland . Searchers are desperately combing bushland and the banks of a lake for an autistic who went missing there . A widespread search is being carried by search and rescue teams including the dog squad and local police .
target: Luke Shambrook was last seen leaving Candlebark Campground on Friday .
  The 11-year old was camping in the Victorian national park with his family .
  Luke has limited speech and his family says he is probably confused .
  A large search is being carried by a medley of search and rescue teams .
  Police also said conditions are favourable for his survival overnight .
  They have issued an extensive description of Luke and his clothing .