In a 911 call released Monday, Sergio Celis calmly informed a dispatcher that his 6-year-old daughter Isabel had disappeared from her bedroom in their Tucson home.

“I need to report a missing child. I believe she was abducted from my house,” he said. Asked why he believes she was abducted, however, he responded, “I have no idea.”

On the morning of April 21, Celis called 911 to report that Isabel was gone when he went to wake her up and her bedroom window was open with the screen laying the backyard. “My sons are running around the house looking for her,” he said.

According to Celis, the family got home from his son’s baseball game around 10:30 the previous night and the kids went to sleep soon after that. He told the dispatcher he had been watching TV in the living room at midnight and “never heard anything weird.”

“I was like just on the other side of the wall from her,” he said.

Isabel’s mother Becky had already left for work when Sergio Celis called 911. “I just called her. I told her to get her butt home,” he said.

In a separate 911 call, Becky Celis sounded more emotional and at times panicked as she tried to explain what happened.

“I went to work this morning at 7 and I just, I didn’t even come in and check on her. I should have checked on her,” she said.

Becky Celis told a dispatcher she had put braided ponytails in Isabel’s hair before she went to bed. She said Isabel was wearing an Old Navy American flag t-shirt and navy blue shorts when she last saw her.

Isabel’s 14-year-old brother also spoke to the dispatcher.

“Someone broke in and grabbed her,” he said, adding that it looked like the screen was taken off her bedroom window.

Also on Monday, police confirmed that there has been a voluntary agreement between Sergio Celis and Child Protective Services that he will stay away from his two sons. They would not say what led to that decision.

Tucson Police Chief Roberto Villasenor cautioned reporters at an afternoon press conference not to read too much into the development and said it is not indicative of a specific path investigators are pursuing.

In local and national media interviews, Isabel’s parents have both denied having any involvement in her disappearance.

 For expert analysis of the Celis 911 calls, watch Nancy Grace Tuesday at 8 pm and 10 pm ET on HLN, and go to www.HLNtv.com for all the latest news on the case.

Investigators are searching for a 41-year-old mother and her 11-year-old son who disappeared on May 10th from Bellevue, Nebraska.

According to police, surveillance video showed Charlotte Schilling at Kohl’s prior to checking her son Owen out of Wake Robin Elementary School in Bellevue, Nebraska.

Charlotte & Owen Schilling / Plattsmouth Police

Just hours later, surveillance video captured the missing mother and her son at a convenience store near the Lake Manawa exit in Council Bluffs, Iowa. Police Chief Steve Rathman told HLN that “only Charlotte and Owen Schilling were seen on the surveillance video.”

The next morning, investigators discovered missing mom’s Chevy Malibu abandoned near Lake Manawa.

Police Chief Steve Rathman told HLN that police discovered the contents of the missing mother’s purse and her cell phone inside her car trunk. The purse itself was gone and her cell phone battery was dead.

Investigators and water recue teams immediately began scouring Lake Manawa and the Missouri River with boats equipped with sonar technology for clues, but the search turned up nothing.

Police Chief Steve Rathman told HLN that they are “treating the Schillings' disappearance as a kidnapping.”

Anyone with information in the case is asked to call the Plattsmouth Police Department at 402-296-3311.

For more on the case, go to www.HLNtv.com

A 19-year-old mom sits behind bars after police say she admitted to burning her 13-month-old son’s genitals with a flat iron, according to the arrest affidavit.

On April 26th, police arrived at the Tahlequah City Hospital in Oklahoma where a baby boy was being treated for several broken bones and severe burns to his genital area.

Jodi Rock / Cherokee County Police Department

Police say that when they arrived at the hospital, the baby appeared to be “glassy eyed” and “withdrawn.”

Authorities say Jodi Rock fabricated several different stories to explain her son’s injuries, initially pointing blame at her aunt, uncle and boyfriend.

According to the arrest affidavit, the mother then confessed to “burning [the baby] with a flat iron hair straighter…she then said she took and closed the iron [on the baby’s] private parts.”

Rock then told police that the burned area “raised in a white blister which fell off,” according to the arrest affidavit.

The arrest affidavit states that the mother said either she or her boyfriend could have hurt the baby’s arms as they “both play rough with him…pulling him up by the arms and throwing him up in the air and on the bed.”

DHS immediately took custody of the baby boy while he was being treated at the hospital for his injuries.

HLN reached out to the attorney for Jodi Rock, but calls were not immediately returned.

The 19-year-old mom is currently being held on a $200,000 bond at the Cherokee County Detention Center on charges of felony injury to a child.

For more on the case, go to www.hlntv.com

An 18-year-old girl was arrested after police say she snuck into her ex-boyfriend’s bedroom and lit his mattress on fire because she thought he cheated.

According to the San Francisco Chronicle, District Attorney Steve Wagstaffe says Jacqueline Alexandre Rivera’s ex-boyfriend suddenly “woke up in bed and his mattress was on fire.”

Jacqueline Alexandre Rivera / San Mateo Police

Police say the 18-year-old girl started to fire by pouring gasoline and an accelerant on her boyfriend’s bed.

The victim’s father extinguished the fire with a garden hose after he heard horrifying screams coming from his son’s bedroom.

Rivera’s ex-boyfriend, who has not been identified, was treated at a hospital for minor burns on his arms and hands.

According to prosecutors, Rivera “made admissions” related to the crime resulting in charges of attempted murder, arson of an inhabited building and burglary of an inhabited building.

HLN reached out to the attorney for Jacqueline Alexandre Rivera, but calls were not immediately returned.

18-year-old Jacqueline Alexandre Rivera is currently behind bars with a bail set at $500,000.

For more on the case, go to www.HLNtv.com

Police are searching for a 19-year-old girl who police say was last seen leaving her apartment, reportedly after having an argument with her boyfriend.

On Friday, May 4th, Ashley M. Valladares left work at KFC in Euless, Texas at around 11:15 p.m.

Ashley M. Valladares / Euless Police Department

The missing girl’s boyfriend reportedly told police he last saw her at their apartment with a man he didn’t know.

Investigators say her boyfriend said that she frequently cut hair for extra money and it’s possible the man was a client.

Her boyfriend reportedly got into his car and left after becoming angry that the man was at their apartment so late.

According to her boyfriend, she began chasing his car, begging him not to leave.

Hours later, her boyfriend returned to the apartment to discover his girlfriend gone. All of her belongings were reportedly left behind.

Ashley Valladares’ boyfriend is not a suspect in her disappearance.

Ashley Valladares was least seen wearing a gray tank top and black pants. She is approximately 5-foot-2 and weighs 115 pounds. She has black hair and brown eyes.

If you have any information, please call Euless police at 817-685-1556.

For more on the case, go to www.HLNtv.com

A 14-year-old boy is behind bars after police accused of him of intentionally hanging his nine-year-old half-sister from a tree, causing her to die.

The unidentified boy has been charged with murder and is currently being held at the Coosa Valley Detention Center in Anniston, Alabama.

According to police, nine-year-old Katelynn Arnold was riding her bicycle when her half-brother lured her over near a tree. Around 7 p.m., Katelynn Arnold’s aunt realized the little girl was missing, prompting her to drive around the neighborhood for 45 minutes.

At a Friday afternoon press conference, Sheriff Terry Surles told reporters that Katelynn’s aunt found her hanging from a tree near the family home just after 8 p.m. Police say the girl’s feet were touching the ground and a rope was tied to limb in a figure-8 knot. Investigators removed the girl from the tree and she was pronounced dead at 9:01 p.m. The cause of death was ligature strangulation.

Police arrested her half-brother the next morning after he was questioned by investigators. St. Clair County Sheriff, Terry Surles, says the boy admitted to killing his half-sister by hanging her from a rope. Police say the boy has given investigators a motive, but police will not release it at this time.

For more on the case, go to www.HLNtv.com