Man dies after confronting alleged bicycle thief

A 42-year-old man has died after being stabbed by a teenage boy in Perth's south.

The man was near the intersection of Camm Avenue and Goddard Way in Bull Creek around 10.20am on Sunday when he confronted the teenager who tried to steal a bicycle. 

During the interaction, the boy allegedly stabbed the man in the stomach before fleeing the scene.

He was taken to Royal Perth Hospital but later died from his injuries.

Investigators are appealing for anyone with information, CCTV or dashcam vision regarding this incident to contact Crime Stoppers by calling 1800 333 000 or online at crimestopperswa.com.au.