A man accused of gunning down a 31-year-old acquaintance in Jurupa Valley during an act of rage over an ongoing dispute was charged Thursday with murder and other offenses.

Tyler Catlin Borg, 32, of Fontana was arrested Saturday immediately after the slaying of Justin Kiernan in the 7800 block of Virtue Vista Drive, near Paisano Way.

Along with the murder count, Borg is charged with sentence-enhancing gun and great bodily injury allegations.

He made his initial court appearance Thursday afternoon before Riverside County Superior Court Judge Emma Smith, who appointed him a public defender and scheduled his arraignment for Jan. 8 at the Riverside Hall of Justice.

Borg is being held without bail at the Smith Correctional Facility in Banning.

According to investigators from the Riverside County Sheriff’s Department, Borg confronted Kiernan at the Virtue Vista location at about 9 p.m., angry over an unresolved personal conflict, the nature of which was not disclosed.

Sgt. Steve Brosche alleged that Borg pulled a handgun and shot the victim multiple times, then fled the area.

Witnesses called 911, and deputies arrived within a few minutes. Kiernan was located in the house with grave wounds, Brosche said.

The victim was taken to Riverside Community Hospital, where he died a short time later.

The defendant allegedly drove to Hemet, where he was arrested by deputies a few hours later without incident, according to investigators.

Borg has no documented prior felony convictions in Riverside County.

If convicted of killing Kiernan, the defendant could face 50 years to life in state prison.

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