Hundreds of police, [[State Emergency Service]]s, Rural Fire Service and members of the community searched day and night for Tyrrell. Specialist police, including the sex crimes squad form Strike Force were immediately formed. Motorcycles and helicopters were brought in to search. Two hundred volunteers searched overnight, hundreds of people combed rugged terrain around the home and police divers searched waterways and dams. The police searched every houses in the estate that surrounds Benaroon Drive in several times. The police [[Detection dogs|policedetection dogs]] were brought in and they managed to detect Tyrrell's [[scent]], but only within the boundaries of the backyard.<ref name="aww">{{cite news|url=https://www.aww.com.au/latest-news/news-stories/the-boy-no-one-can-find-20208|title=The boy no one can find|date=7 September 2015|work=Michael Sheather, The Australian Women's Weekly|accessdate=22 April 2015}}</ref> "Strike Force Rosann" was established with specially trained investigators from the State Crime Command who are experienced in the unexplained disappearance of young children. They supported the police, other emergency services workers and members of the public involved in the search. After five days, police said they were unable to come up with any leads.<ref name="abc3">{{cite news|url=https://www.abc.net.au/news/2015-03-02/william-tyrrell-timeline-follows-disappearance-of-nsw-boy/6274088|title=William Tyrrell: Timeline of boy's disappearance in September 2014|date=19 September 2015|work=ABC News|accessdate=19 September 2015}}</ref>
