New court documents have revealed that Robert Cosby Jr., the son of Real Housewives of Salt Lake City Star Mary Cosby, who died last week at the age of 23, was facing two felony assault charges at the time of her death.
The charges were related to a domestic violence incident allegedly involving his ex-wife.
Us weekly confirmed on Thursday, February 26, that Robert Jr. had been charged with one count of aggravated assault and one count of assault in connection with an incident that took place in May 2024.
On February 5, just days before his release from prison, an arrest warrant was issued and the alleged victim is identified in court documents only by the initials AS, although Robert Jr. had been married to a woman named Alexiana Smokoff.
The details of those presentations are deeply troubling.
According to the documents, AS alleged that Robert Jr. punched her in the face and head and “kicked her in the stomach” after she “flushed her drugs down the toilet.”
She further claimed that he “grabbed her by the neck” and “strangled her for 10 seconds.”
Photos provided to authorities showed her with red, swollen eyes, a red mark on her neck and a lump under her left eyebrow.
The charges add a difficult new layer to an already painful story.
Robert Jr.’s ex-wife filed for divorce in November 2025 after nearly three years of marriage.
In December 2025, he pleaded guilty to home invasion and battery after several separate incidents involving Smokoff and his father, and was also charged with violating a protective order.
Their divorce was finalized while he was still incarcerated, and Robert Jr. was released from prison earlier this month.
