Twenty-eight-year-old Jonathan Perrin was charged Thursday with second-degree murder in the fatal stabbing of another man in Saint John's north end.
Nathan Flowers, a 30-year-old Saint John man, has been identified as the victim.
Police allege the two men got into an "altercation" on Rockland Road at about 11 p.m. Wednesday.
The men knew each other and were driving separate vehicles, police said in a news release.
"One driver stabbed the other driver."
Flowers was taken to hospital and later pronounced dead.
Police took Perrin into custody, and he appeared later in provincial court on the murder charge.
Police spokesperson Sean Rocca said the stabbing is still under investigation, so he could not release any other details about Flowers's injuries or what is believed to have happened before he was stabbed.
"We're asking anyone with information or dash-cam footage to call the Saint John Police Force," said Rocca.
The major crime unit and forensic identification unit are investigating the death.