A man in his 20s was stabbed in Academy Road by Shooters Hill Road around 3:28pm on Sunday afternoon.
The man, believed to be in his 20s, was found with serious injuries. He is being treated at the scene.
Officers are awaiting an update into his condition.
A crime scene and road closures are in place.
Anyone who witnessed the incident, or who has information, video or images that could assist police, are asked to call 101 ref CAD 4426/15 March.