A timeline of the search for four-year-old Cleo Smith who disappeared 18 days ago from a campsite on the northwest coast of Western Australia.
Times are approximate.
OCTOBER 15, FRIDAY
* Mum Ellie Smith, her partner Jake Gliddon and their children Cleo Smith and Isla Gliddon arrive at the Blowholes campsite, about 75km north of Carnarvon, in their Ford dual cab ute early in the evening.
* 8pm - Cleo and Isla put to bed in the family tent.
OCTOBER 16, SATURDAY
* 1.30am - Ellie woken by Cleo for a drink of water. Cleo put back to bed.
* 3-3.30am - Vehicle seen at the intersection of Blowholes Road turning south onto the North West Coastal Highway.
* 6am - Ellie wakes to find Cleo is missing.
* 6.30am - Ellie calls 000 to report Cleo missing.
* 7.10am - Two police vehicles arrive from Carnarvon.
* 7.30am - The family's campsite is cordoned off.
* 8am - Carnarvon detectives search the family house for Cleo before heading to the Blowholes. They stop vehicles travelling away from the campsite along Blowholes Road.
* 8.10am - Local helicopter arrives and begins searching.
* 8.20am - A third police vehicle arrives.
* 8.30am - Police set up a roadblock at the entrance to the Blowholes.
* 9.30am - Nine SES personnel arrive and began searching area around the campsite.
* 3pm - Homicide detectives and Emergency Operations Unit search experts arrive by plane in Carnarvon from Perth.
OCTOBER 21, THURSDAY
* Premier Mark McGowan announces a $1 million reward for information leading to Cleo's location or to the arrest and conviction of people involved in her disappearance.
NOVEMBER 2, TUESDAY
* Detectives get a lead and start working on it. In "a matter of hours" they take action.
NOVEMBER 3, WEDNESDAY
* 12.45am - WA Police officers arrive at a locked house in Carnarvon.
* 1am - Police force their way into the house and find Cleo alone in one of the rooms.
* She is alive and physically well. An officer lifts the girl into his arms and asks her name. She replies: "My name is Cleo".
* The word starts to go out amongst police that Cleo has been found.
* 4am - Police officially release the news.
* WA Police Deputy Commissioner Col Blanch describes seeing seasoned detectives openly crying with relief, saying "We were literally looking for a needle in a haystack and we found it".
* A 36-year-old man is taken into custody and questioned by detectives in Carnarvon. Police later confirm he has no connection to Cleo's family.
* Cleo's mother Ellie Smith posts a photo of her daughter on Instagram, captioned "Our family is whole again".
SOURCE: WA Police, interviews with commissioners
Australian Associated Press