OTTAWA — Did you know a third tower fell on 9/11?

The question appears on 300 OC Transpo buses this week in a global advertising campaign challenging the official version of the Sept. 11, 2001, disaster in Manhattan.

New York-based Architects & Engineers for 9/11 Truth is trying to rally public pressure for a new official inquiry into whether the World Trade Center towers and neighbouring WTC Building 7 were actually toppled by shadowy U.S. forces using controlled demolitions.

Though the group is careful not to blame anyone in particular, the implication is that elements allied with the former administration of president George W. Bush needed to manufacture sufficient reason to justify planned military assaults on Afghanistan and Iraq.

We just want a thorough, honest investigation and wherever it leads, it leads