Madeline Soto update: Stephan Sterns to face death penalty in Florida teen's murder, prosecutors say

Madeline Soto case: Sterns to face death penalty

The State Attorney's Office intends to seek the death penalty against Stephan Sterns, the man accused of killing his girlfriend's daughter, 13-year-old Madeline "Maddie" Soto, according to court records – should he be convicted.

OSCEOLA COUNTY, Fla. - The State Attorney's Office intends to seek the death penalty against Stephan Sterns, the man accused of killing his girlfriend's daughter, 13-year-old Madeline "Maddie" Soto, according to court records – should he be convicted.

The decision was made based on several factors including the state's intention to prove that:

A capital felony was committed while Sterns was engaged in the commission of, or an attempt to commit aggravated child abuse
Madeline's vulnerability because Sterns stood in a position of familial or custodial authority over her
The capital felony was considered "heinous, atrocious or cruel"
Sterns is currently facing more than 60 counts of sexual battery, molestation, and other sex-related charges in a separate case, which will serve as priors if he is convicted

Madeline Soto case: New Stephan Sterns documents

FOX 35 has obtained new documents from the Florida State Attorney's Office in the Madeline Soto investigation. These documents provide new details previously unknown, including the initial interview police had with Stephan Sterns, Soto's mom's boyfriend, his timeline of what happened the day Madeline was reported missing, the 1,700 sexually explicit images allegedly found on his cell phone, and details about his relationship with the 13-year-old girl.

You can read the court document in its entirety below:

Sterns is the prime suspect in the Osceola County teen's death.

MORE: Madeline Soto update: New video shows Jenn Soto, Stephan Sterns after Florida girl reported missing

Madeline was first reported missing by her mother, Jenn Soto, on Feb. 26 after she did not attend class at her Orange County middle school after allegedly being dropped off by Sterns.

During an investigation into Madeline's disappearance, investigators found multiple "disturbing" pictures and videos on Sterns’ phone.

Booking photo of Stephan Sterns from the Osceola County Jail.

Deputies conducted a search in the area where Sterns claimed to have last seen Madeline, using a canine unit that was unable to detect her scent. Her body was found days later on March 1 in a rural area in Osceola County.

Investigators believe Madeline was likely killed before the school day began.

In April, a grand jury indicted Sterns on a charge of first-degree murder in her homicide.