Officials at Bristol Township’s Armstrong Middle School said in an e-mail alert to families Tuesday afternoon they were in shutdown mode for an ongoing police investigation.

The “lockdown” began around 2 pm sources said.

Students are safely secured in their class rooms while police look into the “safety concern” an E-mail from the school says.

School officials were right lipped about the  specific nature of the police activity at the school but did say regular dismissal time will remain the “normal time, ”

Police will assist with the dismissal school officials said in an e-,mail alert obtained by Lower Bucks Source.

This is a developing story.

No other information has been made available by school or district officials.

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