'RHOSLC' Star Mary Cosby's Son Robert Jr. Dead at 23, Police Investigating Possible Overdose

Mary Cosby has heartbreakingly lost her son, Robert Cosby Jr., at age 23.

The Real Housewives of Salt Lake City star's only child devastatingly died on Monday, February 23, in Utah. While his cause of death has not been confirmed at time of press, police responded to a possible overdose and launched an investigation into his death upon arrival, according to TMZ.

Cosby confirmed the tragedy in a statement to the news outlet, writing: "Our beloved son Robert Jr. has been called home to the Lord."

"Though our hearts ache, we take comfort in God’s promise and in knowing he is finally at peace. We are grateful for your prayers and trust in the Lord to carry us through this time of sorrow," the Bravo star continued.

Salt Lake City cops said they were dispatched for a "full arrest/medical emergency" involving a 23-year-old male. Fire fighters and paramedics were also called to the scene.

Cosby Jr. died just weeks after he was released from prison following a September 2025 arrest in Utah for numerous alleged crimes.

He ultimately pleaded guilty in November 2025 to assault, trespassing and violating a protective order, among additional charges — which all involved his ex-wife and her father.

That same month, Cosby Jr.'s ex-wife, Alexiana Arian Smokoff, filed for divorce.

Despite asking to be released sooner, the court ordered him to remain behind bars until his February sentencing.

Cosby Jr. revealed his release from prison via Instagram, declaring he was “back” after spending some time in police custody. His lawyer Clayton Simms later confirmed his February 3 release from prison in a statement to People.

According to court documents, Cosby Jr. was ordered to serve 36 months of probation and complete 75 hours of community service.

The reality television personality's son endured years of struggles with substance abuse and trouble with the law in the years leading up to his sad death.

Years prior to his passing, Cosby’s only child was also arrested for a DUI in 2022, which he pleaded guilty to. At the time, police also accused him of not having a license and disobeying traffic laws.

Cosby has been candid about her son's addiction struggles in various podcast appearances and on RHOSLC.

During a Season 5 confessional, which aired in 2024, she admitted "it's really hard" to navigate her son's substance abuse battle.

“Just as a parent, you can feel like you failed, and there's nothing that nobody can do," Cosby expressed at the time. "I don't have help, I don't have a mom, I don't have a grandma, I don't have nobody I can call and say, ‘Help me. My son is going through this. Help me. What can I do?’”

She noted: “But it's my responsibility to make sure if he comes to me and if he says he wants help, it's my responsibility to make sure he gets it. And whatever I have to do to do it, I'm gonna do it.”