Kamloops Mounties are warning the public not to tamper with an engineering tool containing radioactive elements that was stolen from a truck earlier this week.

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A Troxler 3440 portable gauge was stolen from a truck in Kamloops on Sunday. (RCMP)

The portable geotechnical gauge, which is used to measure the density of asphalt, soil, aggregate or concrete, could pose a health risk to the public due to the elements it contains.

The device, a Troxler 3440, contains the radioactive elements americium and cesium, which emit gamma radiation that can burn the skin.

Cpl. Cheryl Bush said the device should have a warning sticker on it stating that it is radioactive.

Anyone who finds the device, or knows of its whereabouts, should call the RCMP.