William Tyrrell Bushland Search Ends

Police have "gathered information relevant to the investigation"

A three-week forensic search of bushland on the NSW mid-north coast has failed to turn up evidence of missing boy William Tyrrell, but police say they have collected "relevant" information to the investigation.

Police launched a fresh search of bush at Kendall on July 13, near where the boy -- then aged three -- went missing in 2014. A large search party combed several kilometres of thick scrub, looking for clues linked to Tyrrell's mysterious disappearance.

While police initially sounded hopeful of a breakthrough, that search was brought to a close on Thursday.

"While police have not located William or evidence of William being in the search areas, Strike Force Rosann detectives have gathered information relevant to the investigation," police said in a statement.

NSW Police search bushland in Kendall on June 13 (AAP Image/Joel Carrett)

"The Homicide Squad’s Strike Force Rosann are continuing their inquiries into the suspicious disappearance of William Tyrrell and remain focused on providing answers to his family."

Police thanked the local community,  the State Emergency Service, Rural Fire Service, the Salvation Army, and the Kendall Show Society for assistance in search efforts.

"Police remind members of the public that a $1 million reward remains in place for information that leads to the recovery of William," a spokesperson said.