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			 SWAT teams searching the Ivy League campus didn't find a gunman 
			after a room-by-room search, and the lockdown was lifted Monday 
			afternoon. No one was injured, police said. 
 			"New Haven is safe. The Yale campus is safe," New Haven police Chief 
			Dean Esserman said.
 			A 911 call was received at 9:48 a.m. from a man at a pay phone about 
			a mile from the campus who said his roommate was on the way to the 
			university to shoot people, Officer David Hartman said.
 			Esserman said he was leaning toward the incident being a hoax and a 
			witness who reported seeing someone with a rifle likely saw a law 
			enforcement officer.
 			"Though it is starting to tilt in the direction of an innocent 
			mistake, it started with a purposeful and malicious call," Esserman 
			said, vowing to track down and arrest the person who made the call. 			
			
			 
 			Authorities don't believe that the caller was a Yale student or that 
			his roommate attended Yale, Esserman said. There was nothing 
			specific about the threat, he said, and the call lasted only 
			seconds.
 			Classes aren't in session this week, and many students and staff 
			members left campus for the Thanksgiving holiday following 
			Saturday's traditional football game against Harvard.
 			But many students were still in their dorm rooms, Hartman said, and 
			Yale authorities sent out their first warning about half an hour 
			after the 911 call.
 			"The Yale police made the right call," Esserman said. "They went to 
			immediate lockdown to keep everybody safe."
 			Yale advised students and staff members to shelter in place. It also 
			issued an advisory asking people off campus to stay away. The 
			shelter advisory was lifted by late afternoon.
 			Police blocked off several streets near the university's Old Campus, 
			in the heart of New Haven, where they were concentrating their 
			search. Several local schools also were placed in lockdown. Police 
			in tactical gear entered several campus buildings. Pedestrian 
			traffic in the normally bustling area was sparse, with cold and 
			windy weather keeping many people indoors. 			The response included several police departments, the FBI and other 
			federal agencies, Hartman said.
 			
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			 			Police had difficulty gaining access to some rooms because those 
			people locked inside weren't convinced they were dealing with law 
			enforcement, he said. Most rooms don't have peepholes. Yale sent out 
			an email telling community members that officers would be slipping a 
			Yale ID under the door or using keys to gain access.
 			Undergraduate classes are set to resume Dec. 2
 			Yale has been the target of violence in the past. In May 2003, a 
			bomb damaged an empty classroom and adjacent reading room at the law 
			school.
 			A Yale professor, David J. Gelernter, was seriously injured in 1993, 
			when a bomb mailed by Theodore Kaczynski, the man known as the 
			Unabomber, exploded in his campus office.
 			Monday's search came several weeks after a scare on another 
			Connecticut campus.
 			Central Connecticut State University was in lockdown for several 
			hours Nov. 4 after reports by witnesses of a masked man carrying a 
			gun or sword.
 			Police arrested a student, David Kyem, who said he had been wearing 
			a ninja-like Halloween costume and meant no harm. He faces charges 
			including breach of peace.
 [Associated 
					Press; JOHN CHRISTOFFERSEN] Associated Press writer 
			Pat Eaton-Robb in Hartford contributed to this report. Copyright 2013 The Associated 
			Press. All rights reserved. This material may not be published, 
			broadcast, rewritten or redistributed. 
			
			 
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