Earlier Friday evening New Westminster police responded to a call in the 400 block of 8th Street for an assault.
When officers arrived on scene, one man was found with a lacerated left arm.
He was taken to hospital with non-life-threatening injuries.
Another man has been arrested, and is in custody.
Police believe the two men know each other.
The street was closed while police investigated, and has since been re-opened to traffic.
The investigation is currently ongoing.
Anyone with any information is asked to call New Westminster police at 604-525-5411.