Police are investigating separate incidents where two boys were robbed and another was stabbed by a group of people on motorbikes in Bertram and Baldivis.
Detectives say two 14-year-old boys were riding their electric scooters on Mortimer Road around 9.40pm on Saturday when they were confronted by three males on motorbikes.
During the confrontation, the victims were threatened with a knife and their scooters were stolen.
A short time later, about 11.30pm, three teenage boys were walking along Safety Bay Road when they were approached by a group of males on motorbikes and scooters.
A fight broke out, during which time one of the males suffered stab wounds to his abdomen.
"A 16-year-old male juvenile was dropped off at Rockingham Hospital by two unknown males on motorbikes," a WA Police spokesperson said.
Detectives are seeking CCTV and dashcam vision of the below locations:
- Mortimer Road and Kwinana Freeway, Bertram between 9.30pm and 10pm
- Safety Bay Road and Baldivis Road, Baldivis between 10.15pm and 11.15pm
- Rockingham General Hospital, around Elanora Drive, between 11.30pm and 12.15am
Anyone with information in relation to these incidents is urged to contact Crime Stoppers on 1800 333 000 or report online via www.crimestoppeswa.com.au.
People reporting information to Crime Stoppers may remain anonymous if they wish.
Locals urged to look out for man who removed electronic monitoring device
Four charged over brutal Warnbro home invasion allegedly linked to illicit tobacco trade
WATCH: Whale beached at Long Point
City of Rockingham records steep increase in animal cruelty complaints related to untreated medical conditions
Accused dirt bike hoons charged by Mandurah Police
Heavy rainfall, thunderstorms to lash Mandurah down to Busselton
Drivers escape serious injury after West Pinjarra, Baldivis crashes
Police investigate stabbing of two men at Warnbro home
Shark sighted in Dawesville Channel
