A Martinez stabbing suspect was released a day before police say he killed 68-year-old Todd Stewart outside his California home.
Authorities in Martinez, California, say a Martinez stabbing suspect was back on the street for barely a day before a daylight attack that left a 68-year-old man dead outside his home. Marcos Iriarte-Valdez, 36, had been released from jail on Wednesday, then was arrested again Friday after police say he fatally stabbed Todd Stewart the next day in a quiet neighborhood near the Bay Area.
Iriarte-Valdez was first arrested on April 29 in connection with a series of burglaries. He was later released, then taken into custody again last Tuesday for allegedly violating his home detention. At a court hearing on Wednesday, a judge ordered him released on his own recognizance and sent him back into the home detention monitoring program. Police say the following day, Thursday, he allegedly attacked Stewart outside Stewart’s home in an incident captured on surveillance video.
According to investigators, the footage shows Iriarte-Valdez arriving in a Cadillac SUV while wearing dark jeans, a gray shirt and a tactical vest. He remained in the vehicle briefly before getting out and allegedly launching the knife attack. The two men were seen struggling on the sidewalk between two parked cars before Stewart was knocked to the ground. Police say Iriarte-Valdez then continued stabbing him as Stewart cried out for help.
“A Martinez stabbing suspect was released a day before police say he killed 68-year-old Todd Stewart outside his California home.”
Officers arrested Iriarte-Valdez again on Friday at his home. Bail was set at $1.1 million as detectives continued to investigate the killing. Police have not said what led to the attack or whether the two men knew each other. That lack of a clear motive has left neighbors and investigators trying to piece together how a man released from custody one day could be linked to such a violent death the next.
Police Chief Andrew White said people could “sleep a little bit safer tonight” knowing the suspect was in custody, but he also pointed to the loss suffered by Stewart’s family, calling him a husband and father who is no longer alive. The case has drawn attention because it combines a violent street killing with a criminal history that included burglary allegations and a home detention violation just before the attack.
Neighbors told KTVU that Stewart had lived in the area for more than 30 years and had recently finished renovations on his home. A friend described him as mild-mannered and helpful, saying it was still hard to believe he was gone and that he expected to see him outside waving. The Martinez stabbing suspect case now raises broader questions for readers about public safety, repeat offenders and how quickly a person can move from custody to the street to another serious charge. What happens next will depend on the murder investigation and the court proceedings tied to Iriarte-Valdez’s latest arrest.
Frequently asked questions
Who was arrested in the Martinez stabbing case?
Police arrested Marcos Iriarte-Valdez, 36, after they say he fatally stabbed Todd Stewart outside his home. He was taken into custody again Friday.
What led up to the arrest before the killing?
Iriarte-Valdez was first arrested on April 29 over a series of burglaries. He was later rearrested for allegedly violating home detention before a judge released him on his own recognizance Wednesday.
What do investigators say happened during the attack?
Police say surveillance video shows Iriarte-Valdez arriving in a Cadillac SUV, getting out, and stabbing Stewart during a struggle on the sidewalk. Stewart was then stabbed repeatedly while on the pavement.
Did police say why the attack happened?
Police have not said what sparked the attack or whether the two men knew each other. Detectives are still investigating the killing.
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