UPDATE: 12:30 P.M.
Bomb dogs swept the school and found no evidence that the bomb threat was credible. Students were returned to school.
School officials are working with police after a bomb threat was made to John Marshall High School in Rochester on Wednesday morning.
"An anonymous bomb threat was called into the school this morning. We take all threats very seriously, as a result, we are evacuating the building and working the Rochester Police Department to sweep the building," the school posted on Facebook.
"We will provide more details as soon as we have them. All of our staff and students are safe."
A K9 unit is sweeping the school for explosives and another bomb dog was on its way to assist in the search.
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