Long Beach Man Sentenced for 2023 Manslaughter
Oscar Alejandro Chan received a 22-year prison sentence following the 2023 death of Mario Gallegos.
Updated on Sept. 21, 2026 in Violence
A court has sentenced 45-year-old Oscar Alejandro Chan to 22 years in state prison for the voluntary manslaughter of 44-year-old Mario Gallegos. Chan pleaded no contest to the charge stemming from a 2023 shooting in North Long Beach.
Why it matters
The sentencing concludes a legal process initiated after the fatal encounter on California Avenue. Authorities ultimately tracked and arrested Chan in Santa Fe Springs following the incident.
Oscar Alejandro Chan received a 22-year sentence in state prison after pleading no contest to voluntary manslaughter. This outcome follows an investigation that led to his arrest in Santa Fe Springs.
The players
Oscar Alejandro Chan
The 45-year-old defendant pleaded no contest to voluntary manslaughter.
Mario Gallegos
The 44-year-old victim died from a gunshot wound to the upper body.
The details
On May 10, 2023, the defendant arrived at the victim's residence in the 6200 block of California Avenue unannounced. A physical fight broke out between the two men before Chan fatally shot Gallegos in the upper body.
Timeline
May 10, 2023: The shooting occurred in North Long Beach at 6:30 a.m.
September 18, 2026: Chan pleaded no contest and received his sentence.
Legal Context
This sentencing follows the standard application of the California Voluntary Manslaughter sentencing guidelines for cases involving fatal shootings. Such outcomes reflect the state judiciary's consistent approach to processing violent offenses through plea negotiations.
The resolution of this case removes a violent offender from the community following the fatal incident in North Long Beach. Local residents can expect no further active investigation or court proceedings regarding this specific shooting.
The takeaway
This case highlights the finality of legal proceedings for violent crimes committed within residential neighborhoods. Families and residents are reminded to utilize local resources if they face volatile or threatening situations.
Further reading
For more information on public safety, visit the Violence section.
Source note: This article includes information reported by Press Telegram.
