PROVIDENCE, R.I. (AP) — With the search for the Brown University shooter in its fifth day Wednesday, authorities were asking the public to review any security or phone footage from the week before the attack in the hopes it might help investigators identify the suspect, believing he may have cased the scene ahead of time.

“We’re looking for a moment that is shorter than someone taking a breath,†Providence's police chief, Col. Oscar Perez, said at a Tuesday news conference.

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