A teenage boy is in hospital with serious injuries following an alleged stabbing in Mandurah.
Police were called to the Smart Street Mall around 11.25am on Saturday after an altercation allegedly broke out between a group of people.
A 17-year-old boy suffered serious injuries, believed to be stab wounds, and was rushed to Royal Perth Hospital by ambulance.
Police are now questioning two teenagers, aged 15 and 16, and a 53-year-old man over the alleged incident.
Any witnesses or anyone with footage of the incident is asked to contact Crime Stoppers on 1800 333 000.
Baldivis Police on the lookout for reckless dirt bike riders
WATCH: Youths captured on CCTV stealing car in Golden Bay
Fire crews battle early morning blaze in Warnbro
Driver charged over alleged hit-and-run on Mandurah Terrace
More paramedics, ambulances to be stationed in Dawesville, Australind
Strict demersal fishing bans to come into force off WA coast to save species from extinction
Police call for witnesses to fatal Waroona crash
Teen injured in suspected hit-and-run in Mandurah