Five new local COVID-19 cases have been detected in Western Australia.

Four were contacts of previously known cases, and two of them had potentially been infectious in the community, while one of the new cases has not been linked to any previously known ones and has been infectious in the community.

Contact tracers are working to determine new potential exposure sites, which will be added to the HealthyWA website.

Five additional travel-related cases were also detected as of Wednesday evening.