Detectives are seeking public assistance after ten packages of white powder were located washed up on the beach at Ramsay Bay, Hinchinbrook Island.
Members of the public contacted police on Sunday after discovering the one-kilogram packages containing a powder substance on the beach at the high tide mark.
Investigators from the Major and Organised Crime Squad (MOCS) Far Northern and Cairns District are searching the area as part of investigations.
Acting Officer in Charge of MOCS Far Northern Detective Acting Senior Sergeant Graham Camp said police are now seeking further information from the public over concerns the contents of these packages could become a health risk if handled by the finder.
"Anyone who was at sea or on the coastline near these locations and saw anything suspicious in the water or other suspicious activity is urged to contact police," Detective Acting Senior Sergeant Camp said.
"It is possible further packages may wash up along the coast due to tidal flows and ocean currents.
"We urge the public to contact police should they find further packages and to not open them as the substance could be hazardous."
If anyone saw anything suspicious or has located items, please report this to police. It could be valuable information to police.
Police are waiting on the results of forensic examination of the powder, which is suspected of being cocaine.
Police are working with law enforcement agency partners as part of the ongoing investigation.
If you have information for police, contact Policelink by providing information using the online suspicious activity form 24hrs per day at www.police.qld.gov.au/reporting.
You can report information about crime anonymously to Crime Stoppers, a registered charity and community volunteer organisation, via crimestoppersqld.com.au 24hrs per day.
