The three-year-old was snatched from her family's Childers home, about 300 kilometres north of Brisbane, about 6am last Thursday.

Her family believe the intruder snatched Chloe from the lounge room, where she was sleeping with her sisters on Wednesday night, via an unlocked window.

She was found by police 42 hours later after being dumped at the Childers Showgrounds across the road from her Ridgeway Street home about 1am on Sunday.

Detective Inspector Bruce McNab said DNA samples had been taken from about 20 people, including family and friends and "other people around town whose names have come up".

"We've had a fantastic result in getting Chloe back alive and well ... but it still leaves that unanswered question of, 'Who took Chloe?"' Inspector McNab said.

It has been reported Chloe was abducted and held hostage over her father's alleged drug debt, with family friend Melissa Small telling News Corp the three-year-old had described her kidnappers as "daddy's friends".

Ms Small would not speak to media on Monday, saying she did not want to jeopardise the police investigation.

However, Inspector McNab said Chloe had made no mention of "daddy's friends" when interviewed by specialist police at the weekend.

"We've spoken to her a number of times and she's certainly given us some really valuable information that we're following up, but she's not said that," he said.

"Likewise, we've spoken to a number of family and friends, who have come forward to tell us things that Chloe told them that we haven't heard from Chloe.

"But at no time has anyone told us that she's uttered the words 'daddy's friends'."

Inspector McNab said reports Mr Campbell was associated with a drug-dealing family in Childers, were so far unfounded.

"I don't know who the drug families are, because we haven't heard of them," he said.

The morning after his daughter disappeared, Mr Campbell said he was certain the kidnapper knew his family, but stopped short of revealing more.

Not long before his daughter was found, Mr Campbell was involved in a drunken fight outside the town's Federal Hotel.

It is understood the distraught father, who had been on a drinking binge since his daughter's disappearance, was arrested and charged about 7pm on Friday.

Inspector McNab said detectives were following "some lines of inquiry", but would not confirm if any persons of interest had been identified.

"We've got a number of possible scenarios that we've thought of, or that people have told us, and each one of those we're following to its logical conclusion," Inspector McNab said.

"We've spoken to a pretty broad cross-section of the Childers community."

The family received no threats or ransom demands during Chloe's two-day disappearance.

Inspector McNab said detectives were working around-the-clock from an investigations centre established in Childers, with the help of local officers.

"I know, moving around the streets of Childers, there's people in the local community who are really concerned about how this person could take a young child out of her bed," he said.

"These cowards, and you can't call them anything but cowards, have then left a three-year-old girl in the dark of the showgrounds in the hope that she finds her way home, or someone finds her - a more cowardly act, you couldn't possibly imagine."

Inspector McNab said police had made inquiries as far south as Tweed Heads, New South Wales during the investigation.

"We've still got specialist investigators in town and if people have information to tell us we'd ask them to come forward ... it doesn't matter how obscure or unrelated it may seem we want to talk to the community," he said.

Anyone with information is asked to contact Crime Stoppers on 1800 333 000.