Police are investigating a threatening phone call to the West Haven High School on Tuesday afternoon.
The call was made to the school around 12:30 p.m.
Police said extra officers will be on the grounds until the students at dismissed at normal time. Some after school activities, like adult education classes, were canceled.
"Police are on scene as the safety of students and staff are paramount," West Haven Police Sgt. David Tammaro said in a release on Tuesday.
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