Chancellor Nicholas B. Dirks instead proposed an alternate May 2 date for the conservative author.
Dirks said police have “very specific intelligence regarding threats that could pose a grave danger to the speaker,” her audience and protesters and urged Coulter to come speak at the later date instead.
Campus Republicans invited Coulter to speak at Berkeley April 27 on the subject of illegal immigration.
On Wednesday, UC Berkeley officials announced they were was calling off the event because of security concerns, prompting Coulter to say she plans to come anyway.
Dirks said Thursday that Coulter’s reaction led him to launch an expanded search for an “appropriate, protectable venue.”
Young America’s Foundation, a conservative group that books Coulter’s campus speeches, did not immediately respond to a request for comment Thursday.
Berkeley has been the site of clashes between far-right and far-left protesters, most recently at a rally last weekend called in support of President Donald Trump in downtown Berkeley.
In February, masked agitators shut down a speaking event by Milo Yiannopoulos, a former editor of the conservative Breitbart News site.
University spokesman Dan Mogulof said campus police learned that some of the groups that appeared to be responsible for the violence last weekend and at the Yiannopoulos event “planned to target the appearance of Ann Coulter on campus.”