A San Diego man already in custody on suspicion of killing a man and leaving his body on the side of a highway has been linked to three more homicides in the area, prosecutors said.
Dwight Rhone, 74, was initially charged in December 2024 with one count of murder in connection with the 2023 killing of Bernardo Moreno, 54, according to a San Diego County District Attorney’s Office news release.
But on Wednesday, prosecutors announced they were charging him with three more counts of murder, as well as a special circumstance for committing multiple murders. The new charges are connected to cold cases from 1993 and 2002, in addition to remains found at a Southcrest home in December.
Rhone pleaded not guilty to the new charges and is scheduled to be back in court again in March. Prosecutors have not yet said whether they’ll seek the death penalty in his case if he’s convicted.
“Our commitment to holding violent offenders accountable remains as strong today as it was on the day these crimes were committed,” San Diego County Dist. Atty. Summer Stephan said in the release. “The District Attorney’s Office will never stop seeking the truth no matter how many years have passed. Victims deserve justice and their families deserve answers.”
Rhone is accused of killing four men, dating back to 1993.
Michael Brown’s remains were found in December 2025 underneath a home where Rhone used to reside after investigators executed a search warrant at the property, according to the release.
In October 2023, Moreno was found dead near the Interstate 5 and State Route 905 interchange. He was found in burned debris and died from a gunshot wound to the head.
In September 2002, Ronald Johnken was found in Chollas Creek near 3300 National Ave., according to the release. He died from blunt-force trauma to the head.
In December 1993, Heriberto Ruiz was found dead in an alley near the 3500 block of Acacia Street. He died by strangulation, according to the release.
Rhone was also the subject of an elder abuse restraining order case from 2017, in which he was accused of harassing Ernie Monia, his sister-in-law and the owner of the property where he lived, according to court records.
Monia also accused Rhone of allowing other people to stay at the home who appeared to be using drugs.
The restraining order expired in 2022. Rhone was arrested in June 2023 by San Diego police after they pulled him over and allegedly found two handguns in his pockets.
Rhone allegedly killed Moreno after their dogs got into a fight and Moreno stabbed Rhone’s dog, according to prosecutors.
Moreno’s burned body was found on the freeway after the California Highway Patrol responded to calls of a brush fire in October 2023, authorities said.
Rhone allegedly drove Moreno’s car for weeks after his killing and also tried to use his credit cards.
In December, the California Highway Patrol’s investigators received information that led them to believe that there were human remains on Rhone’s property, prompting authorities to obtain a search warrant. The San Diego Police and the FBI also joined the search team.