Sears Tower terror plot questioned

CHICAGO, March 16 (UPI) -- Chicago officials say it is unlikely that the Sears Tower was the target of a terrorist plot.

Khalid Sheik Mohammed -- suspected mastermind of the Sept. 11, 2001, terrorist attacks -- told federal agents he planned and financed attacks on the Sears Tower and other U.S. skyscrapers, the Chicago Tribune reported.

A spokesman for Sears Tower said there was never any credible threat to the building.

"Federal authorities have not uncovered a specific threat or plot to target the Sears Tower," Mark Spencer told the Tribune.

Chicago Police Supt. Philip Cline said he had not heard about a plan to attack the building until the Pentagon released the suspected terrorist's alleged confession Wednesday.