New Charges Against Man in San Diego Homeless Attacks

New charges were added Tuesday against a man accused of attacking mostly homeless men as they slept along roads and under freeway bridges in various San Diego neighborhoods last year, resulting in four deaths.

Jon David Guerrero, 40, is charged with a special circumstance allegation of multiple murders and could face the death penalty if convicted.

Guerrero -- who's being held without bail -- pleaded not guilty to four counts of murder, three counts of premeditated attempted murder, five counts of assault and two counts of arson, said Deputy District Attorney Makenzie Harvey.

The prosecutor said the first attack happened on Feb. 8, 2016, when Guerrero allegedly stabbed a man, who was sleeping on a sidewalk, in the face and neck.The victim chased the defendant, who dropped a flashlight, Harvey alleged. Guerrero's DNA was found on that flashlight, according to the prosecutor.

Last June 28, Guerrero allegedly attacked two men while he was riding his bike, hitting them in the back of the head.About 8 a.m. last July 3, the burning body of Angelo De Nardo was found underneath an Interstate 5 offramp near the 2700 block of Morena Boulevard in Bay Park. Witnesses described seeing a man running across the freeway near Clairemont Drive, carrying a gas can. The 53-year-old victim had a railroad spike driven into his head and chest, the prosecutor said.

The following day, Shawn Mitchell Longley, 41, was found dead at a park on Bacon Street in Ocean Beach with a railroad spike driven into his body, and 61-year-old transient Manuel Mason was severely injured by a railroad spike near Valley View Casino Center in the Midway district, according to police.

On the morning of July 6, Dionicio Derek Vahidy, 23, was gravely injured in downtown San Diego by an assailant who fled after leaving a towel burning on top of him. Vahidy died in a hospital four days later.Harvey said Guerrero is also charged in the death of 83-year-old Molly Simons last July 13 in North Park. The victim was not homeless and lived with her husband, police said.The prosecutor said Simons was walking to the YMCA, where she volunteered several times a week, when Guerrero allegedly rode by on a bicycle and struck her in the back of the head, causing her death.

Another attack happened shortly after 4:30 a.m. July 15, when two San Diego Harbor Police officers in a squad car in the 1800 block of C Street heard someone underneath Interstate 5 in the East Village yelling for help, police said.

The officers pulled over and found a 55-year-old homeless man suffering from ``significant trauma'' to his upper body.

Guerrero was arrested that day on his bicycle, Harvey said. The defendant had a backpack containing a large mallet with apparent blood stains along with three railroad spikes, according to the prosecutor.

A status conference is scheduled May 17 and a preliminary hearing set for July 11.

Photo Credit: 10News

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