PEWAUKEE, WI (WTAQ) - Authorities across the nation are trying to put a clamp on copy-cat incidents and threats, in the wake of last Friday’s school massacre in Newtown Connecticut.

In Wisconsin, the Pewaukee School District evacuated students from its middle and high school building Wednesday afternoon.

Superintendent Jo Ann Sternke said the threat was aimed at the high school – and while officials did not believe it was credible, the youngsters were evacuated anyway as a precaution.

All afternoon and evening activities were canceled at Pewaukee High. And the entire Pewaukee district is closed Thursday due to the snowstorm and the expected blizzard conditions. 5 inches of snow had fallen by 6 a.m. at nearby Sullivan.