UPDATE: The Tennessee Bureau of Investigation on Wednesday evening confirmed the body found last week is that of Evelyn Boswell.

Previous story:

A judge has sealed records from an autopsy of remains believed to be those of missing toddler Evelyn Boswell, said Sullivan County District Attorney General Barry Staubus.

"I thought it was necessary because of the publicity the case has engendered, and because it's still under investigation," Staubus told Knox News on Wednesday morning. "I thought it would maintain the integrity of the investigation."

Seventeen days after 15-month-old Evelyn was reported missing by her family, and nearly three months after she was reportedly last seen, investigators said they found the remains of a young girl on property owned by the Boswell family. The discovery seemed to mark the end of a convoluted search that spanned three states and drew hundreds of tips.

The body found last week at the Boswell family residence, on the 500 block of Muddy Creek Road in the small East Tennessee town of Blountville, had the "exact clothing" Evelyn was described as wearing when she was first reporting missing, a Tennessee Bureau of Investigation agent testified.

An autopsy was performed at the William L. Jenkins Forensic Center in Johnson City. Authorities have not announced what the autopsy found. Final autopsy reports, which include toxicology results, can take months to complete.

Staubus' office moved Monday to seal all records from the autopsy. Sullivan County Criminal Court Judge Jim Goodwin agreed and signed a court order that was filed in the case against Evelyn's mother, 18-year-old Megan "Maggie" Boswell, and sent to the forensic center.

The move will make secret information about the identity and cause of death of the body until authorities decide to release it to the public. Autopsy reports are normally public records in Tennessee.

Staubus on Wednesday declined to comment about any conversations he has had with forensic center officials, and said he has not decided whether his office will seek to file additional court records under seal in the case.

"Right now, my concentration is on the investigation," Staubus said. "As far as what my intentions are, I haven't made any decisions about the future."

Megan Boswell remained jailed Wednesday, accused of lying about her daughter's whereabouts from the moment the investigation began. She faces one count of making false reports and is being held on a $150,000 bond. Prosecutors successfully argued for an increase in bond after the remains were found last Friday.

Evelyn's maternal grandmother, Angela Boswell, and her boyfriend, William McCloud, were arrested in North Carolina two days after the TBI issued an Amber Alert for Evelyn. They were accused of fleeing the state in a stolen car shortly after Boswell's ex-husband — Evelyn's grandfather — reported on Feb. 18 that certain relatives hadn't seen the child in about two months.

Records:Baby Evelyn Boswell's life started in a family racked by chaos

Investigators believe Evelyn might have last been seen by a babysitter Dec. 10 or 11, Sullivan County Sheriff Jeff Cassidy said at a news conference late last month.

The remains of a girl of the same age and appearance as Evelyn were found last week in an out-building on property where Megan Boswell's father, brother and grandmother live, according to court documents.

No one has been charged in connection to the toddler's apparent death.

Reach Travis Dorman at travis.dorman@knoxnews.com. Follow him on Twitter @travdorman.