KNOXVILLE, Tenn. – Megan Boswell, 18, the mother of missing toddler Evelyn Boswell, has been arrested in Tennessee on charges related to the case.

The 15-month-old girl from Blountville, Tennessee, went missing in a confounding case that authorities have said is rife with conflicting and inaccurate information.

Sullivan County Sheriff Jeff Cassidy confirmed Wednesday afternoon that police are searching a pond in Wilkes County, North Carolina in connection to the case.

"I hope and pray, my staff hopes and prays and everyone who works on this case hope and prays … that she is alive," Cassidy said at a news conference inside a courtroom in Blountville, Tennessee.

Wilkes County authorities could not immediately be reached for comment. Wilkes County is in northwestern North Carolina, about 80 miles north of Charlotte.

"In due diligence, they're checking it out, and I'm waiting to hear back just to confirm," Tennessee Bureau of Investigation spokeswoman Leslie Earhart said, adding that investigators have not confirmed whether Evelyn was taken across state lines.

"All tips have to be checked out just to make sure."

The Tennessee Bureau of Investigation issued an Amber Alert for the girl on Feb. 19 at the request of the Sullivan County Sheriff's Office. She hadn't been seen since December.

Evelyn remained missing as of Tuesday evening.

Megan Boswell faces one count of making false reports, Sullivan County Sheriff's Office spokesperson Capt. Any Seabolt confirmed.

Related:Grandmother of missing toddler Evelyn Boswell to remain jailed as investigation continues

The bureau of investigation initially reported Evelyn hadn't been seen since Dec. 26, but early into the investigation, officials said it was more likely she was last seen by a babysitter on Dec. 10 or 11. She wasn't reported missing until Feb. 18, according to law enforcement officials.

Evelyn was last seen wearing a pink tracksuit, pink shoes and a pink bow.

Megan Boswell provided detectives and agents with a number of conflicting statements, and further investigation revealed that some of the information was false, Seabolt said.

She remained in custody Tuesday evening in the Sullivan County Jail on a $25,000 bond.

William McCloud, 33, and Angela Boswell, 42, the missing girl's grandmother, were arrested Feb. 21. on fugitive warrants said Lt. Logan Kerr, a spokesman for sheriff's department of Wilkes County, North Carolina. Both waived extradition to be transported back to Tennessee as part of the ongoing investigation. Angela Boswell was returned to Sullivan County on Monday. Kerr said Tuesday that McCloud would be transported to Tennessee soon.

They were interviewed by investigators in connection with Evelyn's case.

Evelyn Boswell:Missing toddler's grandmother and her boyfriend have past domestic violence charges

Police said Megan Boswell, was involved in a car sale that allegedly devolved into a vehicle theft.

According to the Sullivan County Sheriff's Office, Evelyn's mother was purchasing the car for her mother, Angela Boswell, but never completed the sale and still took the car, which amounts to theft.

In an interview with WCYB News 5, the girl’s mother said Evelyn is with a babysitter, but would not identify the sitter.

“The reason I didn’t report it or anything was I knew the person who had her, and I didn’t want them to run away with her,” Megan Boswell told reporters. “And as soon as they thought anything was going on, they just kinda vanished. So I’m just kinda worried, you know, about where they are at. What they’re doing with her."

“This is unlike anything I have ever seen,” said Jeff Cassidy, the Sullivan County sheriff.

Tennessee Bureau of Investigation spokeswoman Leslie Earhart said the FBI has been assisting in the investigation since the Amber Alert was issued.

Evelyn's mother has full custody of the child. Her father, Ethan Perry, is in the military, stationed in Louisiana. Both the child's mother and father, who are not married, have been involved in the investigation, Cassidy said.

Cassidy personally offered a $1,000 reward to anyone who came forward with information that leads to the child's safe return. He asked others to contribute, too, "to bring sweet Evelyn home."

That reward total has reached $58,950.

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