MIAMI , Florida ( CNN ) -- A judge has declared a mistrial in the retrial of six men accused of plotting terrorist acts with al Qaeda . Narseal Batiste , the group 's alleged ringleader , testified he was n't serious about the terrorism threats he made . The decision comes after 13 days of deliberation and marks the second time government prosecutors have failed to convince a jury that the six defendants were guilty of terror-related charges . It is unclear whether the government will pursue a third trial against the defendants . The first trial ended in a mistrial last December after nine days of deliberations left a jury hopelessly deadlocked on the six defendants . A seventh was acquitted . The defendants are known as the `` Liberty City 7 '' because authorities say the men operated out of a warehouse in Miami 's Liberty City housing project . After their arrests in June 2006 , federal officials said the homegrown terror plot may have included as its possible targets the 110-story Sears Tower in Chicago -- the tallest building in North America -- as well as the FBI 's Miami offices and other sites . E-mail to a friend . CNN 's John Couwels contributed to this report .
Judge declares mistrial in the retrial of Chicago terrorism case . Men accused of plotting to target Miami 's Sears Tower and bomb CNN offices . Defendants faced December in prison if convicted of conspiracy charges . First trial ended in a mistrial in December , also because of a hung jury .