Police have turned their attention to alleged Florida high school shooter Nikolas Cruz's posts on social media, and call them very disturbing.

On Wednesday, authorities say Cruz fulfilled everyone's worst fears, pulling a fire alarm and opening fire as students and staff filled the halls. Seventeen are dead.

In New Jersey, some schools will see a heavy police presence in response to this latest shooting.

As another 3,500 cases are confirmed in just the past week, flu activity remains high in each region of New Jersey.

We have a list of where the flu vaccine is still available.