MADISON, Wis. -- State wildlife officials are asking hunters to keep an eye out for any drug-growing operations hidden in remote areas across Wisconsin.

The call comes after two sophisticated marijuana operations were found in the last two years. In both cases, thousands of plants were found on public lands, in part because private lands can be seized if they're used to grow drugs.

Because the operations are well hidden, they're usually only found when hunters stumble across them. So, the Department of Natural Resources wants hunters who spot anything suspicious to tell authorities.

DNR warden Randy Stark said hunters who see something shouldn't put themselves in danger. He said they should back out the way they came, and later write down their location and other observations.