A 14-year-old Upper Macungie Township girl is being charged as an adult in the killing of her mother, Cheryl L. Silvonek.

Lehigh County District Attorney Jim Martin announced April 2, Jamie Lynn Silvonek would be taken to Lehigh County Jail and arraigned on charges of homicide, abuse of a corpse, tampering with physical evidence and criminal conspiracy.

She previously was held in the Lehigh County Juvenile Detention Center.

Her boyfriend, Caleb Gregory Barnes, U.S. Army Specialist 4 stationed at Fort Meade, Md., is accused of fatally stabbing Cheryl Silvonek in the early morning hours of March 15 as the three sat in the family's 2007 Ford Freestyle in the driveway at 1516 Randi Lane, Upper Macungie.

According to Martin, Barnes and Jamie Lynn Silvonek buried Cheryl Silvonek's body around 5:55 a.m. March 15 in the 5700 block of Haasadahl Road, South Whitehall Township.

Lehigh County Coroner Scott Grim, who ruled Cheryl Silvonek's death a homicide, said the cause of death was due to multiple stab wounds to her neck.

An autopsy performed March 16 also showed she had contusions, abrasions and sharp force injuries to her head, neck, torso and extremities.

The Ford Freestyle was found around 7:13 a.m. March 15, partially obscured by vegetation near a pond in the area of Applewood and Huckleberry roads.

At the news conference, Martin credited the David M. Petzold Digital Forensics Laboratory at DeSales University, and the county Regional Intelligence and Investigation Center in Allentown with finding evidence extracted from cell phones and analyzed by investigators, allegedly revealing what happened before the fatal stabbing.

Detectives also analyzed video footage, Martin said.

Martin said South Whitehall and Upper Macungie police and a detective with the Lehigh County Homicide Task Force interviewed Jamie Silvonek, Barnes, neighbors and another juvenile.

A forensic examination of Jamie Silvonek and Barnes' cell phones indicates she allegedly talked about planning her mother's death, Martin said.

He said other messages detailed in the affidavit of probable cause, indicate Jamie Silvonek allegedly lied to Barnes about her age and she wanted him to lie to her mother about his age.

According to the affidavit of probable cause, Jamie Silvonek met Barnes at a concert in Philadelphia in October 2014, at which time she told Barnes she was 17 years old.

During the subsequent months, the two communicated daily by voice, text and social media and met on several occasions in Carbon County while she was visiting family.

Cheryl Silvonek met Barnes for the first time on March 6, the affidavit states.

The affidavit states when Cheryl Silvonek learned Barnes was 20 years old, she instructed her daughter and Barnes to end the relationship.

According to the affidavit, on the evening of March 7 after Barnes returned to his Army base, Jamie Silvonek and Barnes had a cell phone conversation in which Silvonek allegedly suggested a plan to kill her parents, according to another juvenile who was at the Silvonek's home when the conversation between Barnes and Silvonek allegedly took place.

The plan allegedly involved luring her parents away from their home so Barnes could kill them and then rejoin Jamie Silvonek to dispose of the bodies, the affidavit states.

The conversation also included a discussion of life insurance proceeds from Silvonek's father and who would get custody of Jamie Lynn Silvonek, if both her parents were killed.

The affidavit states prior to March 14, Barnes purchased two tickets for the 8:30 p.m. Breaking Benjamin concert at the Hilton Hotel, Scranton.

According to the affidavit, Barnes left the Fort Meade area for the Silvonek home the morning of March 14.

At that time, Jamie Lynn Silvonek, an eighth grader at Orefield Middle School, was taking her standardized tests.

According to the affidavit, at 11:05 a.m. that day Cheryl Silvonek called Barnes on his cell phone.

At 11:12 a.m. the same day, Jamie Lynn Silvonek started texting Barnes allegedly telling him to tell her mother he was 16-1/2 years old.

Jamie Lynn Silvonek and Barnes also sent messages to Cheryl Silvonek telling her someone else was going to the concert with them, at which time Cheryl Silvonek reportedly texted back, "He (Barnes) is not coming to this house," the affidavit states.

According to the affidavit, Jamie Silvonek then texted Barnes, "She needs to go, Caleb. Right now. You don't understand."

Jamie Lynn Silvonek allegedly texted Barnes at 1:30 p.m.: "She threatened to throw me out of the house. I want her gone," the affidavit states.

At about 2 p.m. Barnes arrived at the Silvonek home and he and Cheryl Silvonek had a discussion in which she tried to convince him her daughter was 14 years old and not 17 by showing him her passport, the affidavit states.

At 2:25 p.m. Cheryl Silvonek texted her husband David their daughter's friend (Barnes) had gotten tickets to a concert in Scranton and she would be driving them.

According to the affidavit, at 4:27 p.m., Jamie Silvonek wrote: "I'm going to go to the bathroom while you do it okay. I'll come right out as soon as you're done."

At 4:42 p.m., she wrote, "Why don't we wait until we get in the car with her?"

Barnes replied, "Fine."

"That would be easier for you," Jamie Lynn Silvonek texted. "I guess," Barnes replied.

At 5:14 p.m., Jamie Silvonek wrote, "Just do it."

A flurry of text messages indicate Jamie Lynn Silvonek tried to convince Barnes her mother is lying about her age and Barnes has doubts about Jamie Lynn Silvonek's age.

In a text, he wrote, "There's no way she could fake a passport," the affidavit states.

According to the affidavit, at 5:36 p.m., Jamie Lynn Silvonek texted Barnes, "I need to talk to you," and told him to go to the basement.

At 5:56 p.m., the Ford Freestyle entered the Pa. Turnpike Toll Plaza going north toward Scranton.

A minute later, Jamie Lynn and Barnes began texting each other while in the Silvonek vehicle headed to Scranton.

Jamie Lynn allegedly texted, "I love you. We can do this…We'll just drive her car then, right?"

Barnes allegedly replied, "No. That leaves us as the suspects."

According to the affidavit, Silvonek's vehicle exited at the Wyoming Valley toll plaza at 6:41 p.m.

Video footage from the Hilton Hotel shows Jamie Lynn Silvonek and Barnes enter the concert at 8:32 p.m. and leave at 10:24 p.m., the affidavit states.

Additional footage shows Cheryl Silvonek in the lobby area of the hotel during the concert.

According to the affidavit, Cheryl Silvonek's car was seen entering the Wyoming Valley toll plaza at 11:03 p.m. and exiting the Lehigh Valley toll plaza at midnight.

Video footage at Chris's Family Restaurant, Tilghman Street, shows Jamie Lynn Silvonek and Barnes entering the restaurant at 12:02 a.m. and leaving around 12:45 a.m.

At 1 a.m. neighbors reported hearing a car horn blowing intermittently for about 20 to 30 minutes from a vehicle parked at the Silvonek's home.

One neighbor reported seeing Jamie Lynn Silvonek walk unaccompanied from the vehicle into the garage at about 1:35 a.m., the affidavit states.

The affidavit states video shows Jamie Lynn Silvonek and Barnes enter the parking lot at Walmart, Lower Macungie Township, in Barnes' silver Chevrolet Camaro and enter the store at 2:08 a.m.

Jamie Lynn Silvonek is allegedly seen in the video physically grabbing Barnes arm and directing him inside the store, where they purchased gloves, bleach, rubbing alcohol, a box cutter and a file.

At 2:31 a.m. they exited the store, about an hour and half before police were dispatched to Haasadahl Road and about three and half hours before police found Cheryl Silvonek's body, the affidavit states.

According to the affidavit, when officers responded to the Silvonek home, after Cheryl Silvonek's body and car were found, Jamie Lynn Silvonek was found with Barnes in an upstairs bedroom.

The affidavit states when Jamie Lynn Silvonek was questioned about her mother's whereabouts, detectives saw she had multiple small abrasions on her fingers, a cut on her right hand and a broken fingernail.

According to the affidavit, a forensic review of Jamie Silvonek's and Barnes' cell phones and the content of associated carrier phone records provided text messages which had been deleted from both phones.

Martin said at the news conference, a new criminal complaint has been filed against Barnes, charging him with homicide, abuse of a corpse, tampering with physical evidence and criminal conspiracy.

The previous charge of one count of statutory sexual assault of a juvenile against Barnes has been withdrawn because Jamie Lynn Silvonek is a defendant in the homicide of her mother, and the commonwealth cannot prove that charge without her testimony, Martin stated.

According to Lehigh County Court records, both Jamie Lynn Silvonek and Barnes were denied bail and are being held in Lehigh County Prison.

A preliminary hearing is set for both Jamie Lynn Silvonek and Barnes at 10:30 a.m. April 16 before District Judge Michael Faulkner, Upper Macungie. Silvonek is being represented by John J. Waldron Esq.

Barnes is being represented by the Lehigh County Public Defenders Office.