A file photo shows a crime scene blocked off by the Chicago Police Department. (WTTW News)

A 25-year-old man who police say fatally stabbed a man in the neck Tuesday evening during a road rage altercation in River North has been arrested and charged.

Alan Perez, 25, was charged with first-degree murder Friday afternoon stemming from the killing of 36-year-old Jeremy Walker, who died following an altercation at Dearborn and Ohio streets.

“This was a senseless act of violence, a needless traffic argument turned deadly,” Police Superintendent David Brown said during a Friday afternoon press conference alongside Cook County State’s Attorney Kim Foxx.

According to Brown, the stabbing began around 7 p.m. Tuesday following an “isolated road rage” incident on North Dearborn Street. Both Perez and Walker exited their vehicles and got into a physical altercation, Brown said, before Perez allegedly pulled out a knife and stabbed Walker in the neck.

Walker was able to get back into his car and drive to Michigan Avenue, where he approached police and was taken to Northwestern Hospital. He later died there of his injuries.

Brown said police located Perez’s vehicle the following day in the 2200 block of West 50th Place. While officers searched that vehicle, they spoke to two people who had witnessed the stabbing, and both identified Perez as the offender, according to Brown.

Perez then turned himself in to police Thursday. According to Foxx, he will appear in bond court Saturday.

“This was a horrible, senseless act of violence that will not be tolerated in the city of Chicago or the county of Cook,” she said.

Contact Matt Masterson: @ByMattMasterson | [email protected] | (773) 509-5431