UPDATE: A Newsline 9 reporter on scene said an all clear message has been issued at the high school.
This is a developing story. Stay with Newsline 9 for updates.
There is a police presence at Merrill High School as of 1:15 p.m. Friday afternoon.
Police and school officials are not releasing any information at this time.
Sources inside the school told Newsline 9 the building has been on lockdown for over an hour.
Newsline 9 has a crew heading to the scene. Stay with WAOW.com for updates.
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