East Dakota Highway patrol ordered a ban of hand-held radar guns yesterday in Sioux City, Iowa due to concerns troopers could develop cancer from long term exposure to radiation waves emitted.

Adam Smith a spokesman said “The feeling here is to err on the side of caution until more is known about the issue, the whole situation is under review.” Studies are being conducted to possibly link cancer and the use of such guns. This comes two months after three municipal officers in Central City developed cancer from using the hand held units.

State Troopers will continue to use radar units with transmitters mounted on the outside of their cruisers as the situation is under review.