‘RHOSLC’ Mary Cosby
Interviewed by Police About Son’s Alleged Violence
… Weeks Before His Death
Published
March 28, 2026
2:00 AM PDT
Mary Cosby was interviewed by police weeks before her son Robert Cosby Jr.’s death and was grilled about her son’s alleged domestic violence … TMZ has learned.
According to a Salt Lake City Police report, Robert’s then-wife, Alexiana Smokoff, called law enforcement on November 23, 2025.
Cops say Alexiana told them Robert was behind bars at the time, but she wanted to report an alleged domestic violence incident that she claims occurred in May 2024. She alleged Robert got upset with her after she flushed his drugs down the toilet “because she was tired of his drug use.”
She told cops Robert “grabbed her by the throat with his hand and strangled her.” She also accused him of spitting on her during the incident … but she told cops she lost consciousness and did not remember everything.
According to court documents, the incident allegedly happened at Mary’s home.
The report stated that police spoke to Mary on January 9, 2026, when she was questioned about Robert and his ex. Mary told officers she didn’t see Robert and his wife fight that much. She mentioned they argued verbally, but she was not aware of any physical interactions.
Cops say the Bravo star denied her son was a violent person and noted she did not raise him that way. She also denied seeing any injuries … except for one time he and another party jumped off a balcony while high.
Police reported they also spoke to Robert when he was incarcerated … they say he admitted he was using fentanyl at the time and did not remember everything from the 2024 fight.
Robert told police that he did inform his mom about being physical with his wife. He mentioned he thought he was in a “psychosis” for a period as he was “acting erratic and irrational” and not really behaving like himself.
Alexiana filed for divorce after the incident … and the divorce was finalized while he was in jail.
As TMZ first reported, Robert was facing two domestic violence charges related to the 2024 incident at the time of his death on February 23, at the age of 23.
