Officials in Rhode Island are releasing new video evidence of the person who may have shot and killed two students and wounded nine others at Brown University.
It again shows someone dressed in black walking along a street around the time of the shooting at the Ivy League School on Saturday.
Providence Chief of Police Oscar Perez hopes someone in the public recognizes the man's body-type and the way he walks.
Attorney General Peter Neronha says that the next hours are critical to the investigation.
He says once someone is able to identify the suspect, it will just be a matter of time before the suspect is caught, since it is difficult for someone to disappear in this country.
There continues to be unanswered questions as the probe continues- now with the assistance of the FBI.
Among the unanswered questions are ones of motive.
Officials say they still don't have a motive, and they don't know if the gunman said anything either before or after the shooting.
Others are wondering why there was not a more sophisticated camera system that was tied into the Providence Police Department.
(Photo: Providence Police Department)
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