Onslow County Sheriff Hans Miller said that volunteers came from as far away as Raleigh, which is 120 miles southeast of Jacksonville.
The Onslow County Sheriff's Office and the Federal Bureau of Investigation took 32-year-old Earl Kimrey into custody on Friday. WCTI later reported that a woman in Newport said the photos show her and her own daughter - not the missing girl.
Kimrey, who was in the Onslow County Detention Center on a $1 million bond, faces charges of concealing a death, obstruction of justice, second-degree burglary, larceny and possession of stolen property.
Kimrey is now being held in the Onslow County Detention Center under a $1,010,000 bond.
A statement issued by the Sheriff's Office says the child, Mariah Woods, is believed to be dead. Among them are the FBI's Child Abduction Rapid Deployment team and Team Adam from the National Center for Missing and Exploited Children. "This is my angel", the mother said.
Mariah was last seen Sunday night when her mom said she put Mariah to bed in their home on Dawson Cabin Road.
Searchers targeted a creek and a landfill in their effort to find a 3-year-old North Carolina girl missing since the start of the week.
Arrest made in connection to NC Amber Alert case
The FBI said it has been sending "items of interest" to its lab in Quantico, Virginia, for priority testing in the case.
'Someone just walked right up in there, grabbed the 3-year-old out of the bed and she didn't cry, she didn't scream?
Earlier Saturday, officials said that the live-in boyfriend of Mariah Woods' mother was charged in connection with the case.
'Nobody heard anything? Four people in the house, two adults and two kids, someone just comes up and snatches the baby and walks out?', Alex Woods said. ABC News reports that her mother reached out to the public in an emotion-filled plea Monday. "She's my baby. She's my everything".
The FBI, which was also at the news conference, said that two areas in Pender County were now part of the focus of the search.
At a Thursday press conference, Federal Bureau of Investigation officials said that "items of interest" were taken to Quantico for testing that could "lead us to Mariah", but did not elaborate on what the items were, or where they were located.More news: Syrian state media: Israeli missiles strike near Damascus
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