Ten packages of suspicious white powder have washed up on the Hinchinbrook Island.

Police have launched a major investigation after members of the public discovered the one kilogram packages at Ramsay Bay following high tide.

A police spokesperson wouldn’t confirm if the powder is drugs or what kind but says more information will be provided this afternoon.

Detective Acting Senior Sergeant Graham Camp says police are 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 says.

“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.”