Los Angeles

Four Suspects Arrested in Gang-Related Stabbing in Thousand Oaks, Community Urged to Help Combat Violence

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Published on June 27, 2025
Four Suspects Arrested in Gang-Related Stabbing in Thousand Oaks, Community Urged to Help Combat ViolenceSource: Unsplash / {Taylor Brandon}

In a violent episode that rattled the Thousand Oaks community, authorities have reported the arrests of four individuals following a gang-related assault that left one victim with multiple stab wounds. The incident, which took place late in the evening on May 22nd, prompted an immediate response from local law enforcement, according to a statement released by the East County Investigations Bureau.

The victim, who has not been named, was reportedly attacked with a sharp-edged weapon and was quickly ushered to a nearby hospital, where they underwent surgery. The stakes in such encounters are life and death, and this individual emerged after a stay estimated at a week's recovery. Responding to the emergency on the 1600 block of Calle Diamonte, patrol deputies, along with detectives, began an investigation that would unravel over the coming weeks. As the threads of the investigation unwound, four suspects are now held with their identities laid bare for the public: Henry Tronconi, Joanky Galvez, Joshua Galvez, and one unidentified juvenile.

Following intensive investigative efforts, the East County Special Enforcement Unit and Major Crimes Investigations managed to identify and arrest all four suspects; arrests occurred between June 20th and Wednesday, touching various locations in the county, officials have confirmed. The authorities detailed that three arrested individuals, including Tronconi, 19, and both Joanky, 18, and Joshua Galvez, 23, all regarded as documented members of a local criminal street gang, were booked on assault with a deadly weapon and additional charges related to gang activity.