ACT Policing is appealing for witnesses or dash-cam footage following a motorcycle collision in Ngunnawal last week, believed to have been caused by a wooden log deliberately placed on the road.

At approximately 10:30pm on Wednesday 8 January, police and emergency services responded to a single-vehicle motorcycle crash on Mirrabei Drive.

The 17-year-old rider struck a large wooden log lying across the northbound lane, causing him to be thrown from his motorcycle. He was transported to hospital with non-life-threatening injuries.

Upon arrival, police observed the log on the roadway and suspect it was intentionally placed there.

Anyone who observed suspicious activity on Mirrabei Drive prior to 10:30pm on Wednesday evening, or has dash-cam footage from the vicinity, is urged to contact Crime Stoppers on 1800 333 000, or via the Crime Stoppers ACT website. Please quote reference number 7947395. Information can be provided anonymously.