On February 26, 1993, the World Trade Center was bombed. A group of the conspirators were arrested, convicted, and imprisoned. There has been no strong argument that al-Qaeda was involved, although there have been allegations, including by a former Director of Central Intelligence, that Iraq supported the operational cell. In a PBS interview in October 2001, former Clinton-era CIA Director James Woolsey argued a supposed link between Ramzi Youssef and the Iraqi intelligence services. He suggested the grand jury investigation turned up evidence pointing to Iraq that the Clinton Justice Department "brushed aside."