Death penalty off the table in Mackenzie Lueck plea deal

Oct 7, 2020, 2:43 PM | Updated: 9:16 pm

SALT LAKE CITY — The man accused in the murder of University of Utah student Mackenzie Lueck will avoid the death penalty after pleading guilty in the case, instead serving a life sentence.

Ayoola Ajayi pleaded guilty to the murder of Mackenzie Lueck in a Salt Lake City courtroom Wednesday.

 

He appeared in person, wearing a mask, in the same room with the judge and attorneys. Reporters and others wanting to observe the proceedings did so remotely. 

As part of the plea deal, Ajayi pleaded guilty to criminal homicide, aggravated murder, abuse or desecration of a human body and forcible kidnapping. In exchange, prosecutors will not seek the death penalty, and dropped charges of aggravated kidnapping and obstruction. Instead, Ajayi agreed to serve life in prison without possibility of parole. 

“I want to thank the prosecutors, investigators, and police officers that helped resolve this matter,” Salt Lake County District Attorney Sim Gill said in a statement.  “The entry of the pleas today starts the process of bringing some closure and a measure of justice to the Lueck family.”

(Ayoola Ajayi, Salt Lake County Jail)

The plea bargain also means Ajayi will plead guilty in a separate sex assault case. 

The Mackenzie Lueck case

Mackenzie Lueck disappeared on June 17, 2019, after returning to Salt Lake from a trip to her home state of California to attend a funeral. Police say after she landed early that morning, she took a Lyft ride to Hatch Park in North Salt Lake. The Lyft driver told police she met someone there and got into a vehicle without any signs of distress.

DA Gill later said her last text was sent at 2:58 a.m. on the morning of June 17, 2019, to Ajayi’s phone. Just one minute later, Gill said her phone was powered off and did not come back on. 

Police said phone records placed Lueck in the park at the same time as Ajayi, who also once rented an apartment near the park. Gill said phone records showed Ajayi was at his home in Salt Lake City’s Fairpark neighborhood just a few minutes later, by around 3:07 a.m.

campus ban ajayi new charges lueck

The home of Ayoola Ajayi, where police say they found physical evidence in the murder of Mackenzie Lueck. Photo: Paul Nelson, KSL NewsRadio

As their investigation continued, police searched that home, where they found evidence including charred personal items and human “muscular tissue” that Gill said fit the DNA profile of Lueck. A neighbor told investigators Ajayi poured gasoline and burned something in his backyard that produced a “horrible smell.”

According to the charging documents filed last summer, police noticed a strong smell of gasoline in the trunk of Ajayi’s car when they searched the home.

“Inside the trunk was a red gasoline can,” the charges stated. “Further investigation revealed that Ajayi purchased a similar gas can at Smith’s” at around 9:00 a.m. on June 17, 2019, or about six hours after Lueck was last seen.

Investigators found her body in July 2019, 18 days after her disappearance, in Logan Canyon, nearly 80 miles away, where prosecutors said phone records placed Ajayi’s phone on June 25. Her remains were charred and buried in a shallow grave. 


 A medical examiner determined the cause of death to be blunt force trauma.

The plea deal and other charges

The plea deal puts an end to a lengthy ordeal for the family of Mackenzie Lueck, whom prosecutors say agreed to the arrangement. 

In December 2019, a judge ordered Ajayi to stand trial on charges related to the sexual assault of another woman with some similarities to Lueck’s case. According to police, Ajayi was accused of assaulting the woman, whom he met on a dating app, after inviting her to dinner at his home in March 2018. She came forward after seeing reports about Lueck’s death, telling police she was able to escape. Ajayi pleaded not guilty in that case originally, but pleaded guilty to forcible sex abuse as part of Wednesday’s plea deal. 

Ajayi appeared in court on Thursday, Oct. 1, 2020, to face 19 felony counts related to the alleged discovery of child pornography on his computer. Investigators say they found images of children as young as four years old in the course of the investigation into Lueck’s murder. However, they were not linked to her death. Ajayi pleaded not guilty. Those charges were dropped in Wednesday’s plea deal. 

Ajayi will be sentenced Oct. 23, 2020. 

Contributing: Colby Walker, Marc Giauque

We want to hear from you.

Have a story idea or tip? Send it to the KSL NewsRadio team here.

Wildland firefighter Nathan Matthews, seen here in a photo posted with a GoFundMe account benefitti...

Becky Bruce

Fourth firefighter has died after deadly June fire

Nathan Matthews, a wildland firefighter injured in a burnover incident near the Utah/Colorado state line last month, has died.

10 hours ago

Flood waters surround homes in Beaver, Utah, on Monday, July 20, 2026. Residents have been under a ...

Becky Bruce

Beaver City boil water order partially lifted

Some residents of Beaver City are no longer under a boil water order, though they still should take precautions before drinking or using the water.

3 days ago

The KSL forecast for Saturday, July 25, 2026, shows highs above 75 degrees every day for a week, as...

Becky Bruce

Heat advisory in effect through Monday night for northern Utah

The National Weather Service issued a heat advisory for multiple days, saying the lows at night would not offer much relief from triple-digit daytime highs.

3 days ago

FILE: A sign is posted in front of the 23andMe headquarters on February 01, 2024 in Sunnyvale, Cali...

Logan Stefanich, KSL

Utah, 40 other states reach $18M settlement with 23andMe after data breach, bankruptcy

Utah and over 40 other states on Wednesday announced a $18 million settlement agreement with genetic information company 23andMe after the company filed for bankruptcy in March 2025.

3 days ago

Sen John Curtis, R-Utah, walks through the Capitol during votes in Washington, July 16. A journey t...

Cami Mondeaux, Deseret News

From Salt Lake City to the Senate: Curtis leads tribute honoring Pioneer Day

In the US Senate on Thursday, Sen. John Curtis led a resolution honoring the Utah pioneers for exhibiting a spirit that he says still shapes the country today.

3 days ago

Mateus Rangel, of Provo, plays hymns with his children. He spoke about how he uses songs for "Hymns...

Emily Ashcraft, KSL

Church of Jesus Christ announces 10 hymns to be included in ‘Hymns for Home and Church’

The Church of Jesus Christ of Latter-day Saints released 10 new hymns that will be included in its new hymnbook on Thursday as part of a phased rollout of "Hymns for Home and Church."

3 days ago

Sponsored Articles

...

Bear Lake

Road trip ready: How Bear Lake became the go-to destination for Western U.S. travelers

Whether you are chasing pristine beaches, fresh raspberry shakes, or endless water sports, this sponsored guide—brought to you in partnership with Bear Lake —uncovers everything you need to plan the ultimate getaway.   There’s nothing quite like the thrill of hopping in the car with your favorite snacks in tow and heading out for a […]

...

Harper Clinic

A new standard of care: How Harper Clinic’s IOP is changing the face of mental health treatment in Utah

This article is sponsored by Harper Clinic, a Utah-based clinic offering FDA-approved TMS therapy for treatment-resistant depression.    Utah’s mental health crisis is leaving many residents caught in an uncomfortable middle ground: struggling too much for weekly therapy alone, but unable to step away from work, parenting or daily life for inpatient treatment. As demand […]

...

Harper Clinic

Breaking free from depression: How Harper Clinic’s TMS Therapy can help

This article is sponsored by Harper Clinic, a Utah-based clinic offering FDA-approved TMS therapy for treatment-resistant depression.    The weight of depression is real. Many people spend years fighting it, adjusting medications, managing side effects and wondering if this is simply how life is going to feel.   According to the World Health Organization, depression affects […]

mental health...

Andrew Adams, KSL

Library discussions bring men’s mental health to the surface

Therapists say it’s common for men to repress things like trauma, grief, stress and anxiety. Now, a new weekly series of discussions aims to help men bring it all to the surface.

...

Bear Lake Convention & Visitors Bureau

Cozy up in Bear Lake: Discover the magic of a winter getaway

SALT LAKE CITY – The holiday season shines brightest when time slows down and loved ones gather. Gifts, decorations and festive music come and go, but shared experiences tend to last much longer. Research supports that idea. Dr. Theresa E. DiDonato told Psychology Today that vacations can strengthen relationships by creating meaningful time away from daily […]

...

Harper Clinic

Rewriting the path to healing: Inside Harper Clinic’s whole-person mental health model

OREM — A few decades ago, you’d have had a hard time finding a doctor to treat both your mind and body; And a century ago, you’d have been hard-pressed to find a doctor to treat your mind at all. Today, medical professionals are understanding more and more the undeniable connection between the body and […]

Death penalty off the table in Mackenzie Lueck plea deal