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December 01, 2023

Three Sentenced in 2018 Slidell Double Homicide Case

Collin Sims, District Attorney (Interim), reports that on Wednesday (November 29, 2023), the
following defendants were sentenced by District Judge Vincent Lobello.

  • Steven Lee Olivieri, age 33, was sentenced to 40 years for manslaughter; 25 years for obstruction of justice; 20 years for felon in possession of a firearm and 20 years on possession or manufacturing of a bomb. The court ordered the manslaughter and obstruction of justice charges to run consecutive and the other charges run concurrent for a total of 65 years in prison.
  • Brittney Michelle Savell, age 31, was sentenced to 30 years on each two counts for conspiracy to commit armed robbery with a firearm; 30 years on each two counts second-degree manslaughter; and 30 years for each two counts of second-degree kidnapping. The court ordered all of the charges run concurrent for a total 30 years in prison. The kidnapping and conspiracy counts are without the benefit of probation, parole or suspension of sentence.
  • Derrion Joseph Lemoine, age 28, was sentenced to 40 years on each two counts for conspiracy to commit armed robbery with a firearm; 40 years on each two counts for manslaughter; 40 years on each two counts of second-degree kidnapping; 40 years on obstruction of justice by tampering with evidence and 20 years on one count of possession of a firearm by a person convicted of a felony. All counts are to run concurrent for a total of 40 years in prison. The kidnapping and conspiracy counts are without the benefit of probation, parole or suspension of sentence

Landry, a 4th defendant in this case pled guilty and was sentenced in March 2023, to 40 years in prison for each manslaughter count; 40 years for each count of kidnapping and 30 years for each count of conspiracy. The court ordered two of the 40-year sentences to run consecutive, so he will serve a total of 80 years in prison.

The families of the victims were involved in formulating the terms of the plea and sentencing agreements. The families also gave their victim impact statements at the sentencing hearing.

On February 16, 2018, the mother of the female victim in this case called the St. Tammany Parish Sheriff’s Office to report her daughter, Raegan Day, missing. Day was last seen the previous day leaving Pearl River with her friend, Dustin Hartline. The Sheriff’s Office initiated an investigation to locate the two.

During the course of the investigation, detectives developed information that Day had been in communication with Brittney Savell, who convinced Day and Hartline to pick her up in a Slidell neighborhood for a potential drug purchase. Once a passenger in the car, she directed them to drive to an abandoned property near a home where she had been staying.

When they arrived, Jason Landry and Derrien Lemoine exited an abandoned mobile home with their faces covered, armed with handguns. They forced the two victims out of the vehicle at gunpoint and directed them to walk down a trail into a wooded area. As they were walking, Landry shot Hartline in the back of the head, killing him. The gunshot startled Lemoine, causing him to accidently discharge his weapon, striking Landry in the foot. Then, Landry shot Day in the back of the head.

Landry, Lemoine, and Savell fled the scene and relocated to a residence where Olivieri resided. They advised their friend Olivieri what had transpired. Olivieri and Lemoine went back to the abandoned property to hide the bodies.

As Olivieri and Lemoine approached the murder scene, they discovered that Day was still alive. According to the police investigation, Olivieri ignored Day’s pleas for help and shot her in the head, killing her. Lemoine and Olivieri then moved both victims’ bodies off of the trail to the edge of the wood line, covered them with debris and fled. Olivieri discarded the .25 caliber handgun he had used to kill Day in a nearby water pit.

Later that night, Lemoine returned to the property and put the victims’ bodies in Day’s Camaro. Olivieri followed him to the East Pearl River boat launch off of Highway 90 near the Louisiana/Mississippi State Line where they dumped the vehicle, along with the victims’ bodies, into the river. Eighteen days later, authorities found the vehicle and the bodies in the East Pearl River.

Assistant District Attorneys Jay Adair and Tiffany Dover prosecuted the case. Lieutenant Larry Hudson with the St. Tammany Police Department Criminal Investigations Division led the investigation. 

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