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.