Ex-boyfriend pleads guilty to murder of Corona woman

Ex-boyfriend pleads guilty to murder of Corona woman

A Riverside man who police say confessed to killing his ex-girlfriend in Corona last year has pleaded guilty to murder.


Mark Aaron Brierley, 43, faces life in prison with no possibility of parole for stabbing Sharmon Jay Intili, 46, according to a Corona police news release. He waived all appeals as part of the plea deal, the release said.


On Nov. 23, 2016 — the night before Thanksgiving — one of Intili’s two teenage daughters found her unconscious on the floor, covered in blood from multiple stab wounds, in her home in the 100 block of East Grand Boulevard. Intili died at the scene.



Detectives learned she had ended a relationship with Brierley a few weeks earlier, police said. Friends and co-workers told police that Intili believed he was stalking her, and she was fearful enough to change her locks.



Brierley soon became a “person of interest,” but it wasn’t until late spring that police had enough evidence to arrest him.


He was first taken into custody June 15 as he left work in Jurupa Valley on an unrelated vehicle theft and concealed firearm case, then named as the suspect in the homicide.


“Brierley confessed to Intili’s murder and told investigators where to locate outstanding evidence he had hidden, which was then recovered,” Corona police disclosed in a news release Tuesday announcing his guilty plea.


Court records show that a week before his guilty plea, the Riverside County District Attorney’s Office filed notice that it would not seek the death penalty against Brierley.


Sharmon Jay Intili, 46, was killed Friday, Nov. 23, 2016, in her home in Corona. (Photo courtesy of Brett Crawford)
Sharmon Jay Intili, 46, was killed Friday, Nov. 23, 2016, in her home in Corona. (Photo courtesy of Brett Crawford)

Intili was part of a close-knit group of friends who had gone to Norco High together. After her death, they described her as a loving sister, generous mother and great friend.


“To see her without a smile was rare,” longtime friend Dave Rike said in a 2016 interview. “Every time we would get together, it was always a good time.”


Brierley had no previous criminal record in Riverside County. In December 2016, two weeks after Intili was killed, his ex-wife sought and was granted a domestic violence restraining order against him, on behalf of her and their two daughters, court records show.