Jacksonville Man Charged With January Murder
A 24-year-old suspect is now charged with murder following a fatal shooting that occurred earlier this year.
Updated on Oct. 22, 2026 in Violence

Authorities in Jacksonville have charged 24-year-old Dominque Alexander with the murder of 45-year-old Porfirio Rosario. The charges follow a shooting incident that took place on January 28 at 103rd Street and Britton Lane.
Why it matters
The formal murder charges follow a long-term investigation into the January shooting. Alexander had already been held at the Duval County jail since his arrest in March for separate firearm possession charges.
Dominque Alexander faces one count of murder, four counts of attempted murder, and one count of possession of a firearm by a convicted felon. He remains in the Duval County jail following his formal booking on these new charges.
The players
Dominque Alexander
He is the 24-year-old suspect who has been held in the Duval County jail since March.
Porfirio Rosario
He was the 45-year-old victim who died after being shot while inside a vehicle.
The details
Investigators allege that Alexander fired into a vehicle at the intersection of 103rd Street and Britton Lane. The victim, Porfirio Rosario, was transported to a local hospital by the driver of the car he was occupying but succumbed to his gunshot wound.
Timeline
January 28, 2026: Victim Porfirio Rosario sustained a fatal gunshot wound.
March 2026: Dominque Alexander was arrested for firearm possession.
October 21, 2026: Alexander was officially charged with murder.
Legal Context
This case follows the established 2026 Jacksonville crime reporting protocols for handling violent offenses. The consolidation of murder and attempted murder charges reflects a standard trajectory for long-term investigations in this jurisdiction.
The formal charging of the suspect clarifies the status of the investigation for the Jacksonville community. Residents can monitor court proceedings through the Duval County Clerk of Courts for further updates on the legal process.
The takeaway
This development highlights the ongoing legal efforts to prosecute violent crimes in the city. Residents are reminded to report suspicious activity at intersections to local authorities to aid in timely investigations.
Further reading
For more information on local safety, see the Violence section.
Source note: This article includes information reported by News 4 Jax.










