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.
Good Samaritan sought by police after helping teen during robbery in Baldivis
Under-16s social media ban now in force
Desperate search continues for missing Bunbury FIFO worker
Passengers now able to use credit, debit cards to tag on and off WA's public transport
New floating jetty speeds up emergency response times for Marine Rescue Mandurah
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