CHICAGO (CBS) — Chicago police officers are haven been dispatched to local media outlets following the mass shooting at a newspaper in Maryland.

CPD called CBS 2 and said the officers were being sent as a precautionary measure. Two uniformed officers arrived in the CBS 2 lobby shortly after 3:30 p.m. and will be here “until further notice.”

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There is no motive yet for the shooting at the Capital Gazette. At least four people were fatally shot and more were injured.

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Police say they have one suspect in custody.