Local 4 News at 11 -- Dec. 9, 2021

Here’s what you missed on Local 4 News at 11:

Plymouth-Canton Community Schools closed Friday after threat triggers 4-hour lockdown

A threat at the Plymouth-Canton Educational Park sent three high schools into lockdown for nearly four hours on Thursday as officers went from classroom to classroom searching for a gun.

Multiple law enforcement agencies swarmed the complex. A gun was never located, but as a result the district has decided to cancel all classes and programs on Friday.