December 8, 2011 6:54 pm Investigators Narrow Search For Shannan Gilbert Investigators are focusing on a marshy area on Long Island, as they continue to search for the remains of missing prostitute Shannan Gilbert. News 4’s Greg Cergol reports. Local 14:23 NYPD arrests around 100 protesters at Columbia University 29:11 NYPD moves in on protesters at Columbia University making dozens of arrests 1:45 NYPD enters Columbia University in riot gear to clear protest 3:24 Mayor Adams and the NYPD urge protesters to leave Columbia University 18:33 NYC Mayor Eric Adams says Columbia University protesters include outside actors