The FBI supervisor who ran the Oklahoma City investigation into the bombing of the federal building and the veteran agent who was in command at the bombing scene say new evidence is serious enough to warrant reopening the case. The new evidence, detailed in documents obtained by The Associated Press, shows FBI agents destroyed evidence and failed to share other information that raised the possibility that a gang of white supremacist bank robbers may have helped Timothy McVeigh. Dan Defenbaugh, the now-retired FBI chief of the McVeigh investigation, and Danny Coulson, the FBI scene commander for the Oklahoma bomb site, says the evidence should be checked out if it still exists. Defenbaugh said he also was concerned investigators were never told that the bank robbers had an Arkansas driver`s license in the name of Robert Miller -- the alias name used by Arkansas gun dealer Roger Moore. The government contended at McVeigh`s trial that Moore was robbed at his Hot Springs home in November 1994, and the proceeds were used to fund the Oklahoma City bombing.