NBC Nightly News anchor Brian Williams has already stepped down from his position following the false report he gave regarding the Israeli Defence Forces helicopter he rode in, which he alleged was brought down by Hezbollah rocket fire back in 2006.

But it seems like the beleaguered news anchor is facing more raps for giving differing versions of that story.

The Washington Post reported that his blog post dated July 18, 2006 said that they were flying "at 1,500 feet" in a Blackhawk helicopter. He later said that the pilot told him rockets "landed about 30 seconds ago and that he witnessed a rocket launch about six miles away.

"A rising trail of smoke, then a second rocket launch, an orange flash and more smoke - as a rocket heads off toward Israel," wrote Williams.

Williams gave a differing description, however, just a month after when he appeared on Comedy Central's "The Daily Show." He told host Jon Stewart about "a view of rockets I have never seen, passing underneath us, 1,500 feet beneath us."

But that is not the description of the rockets he described in his original blog post.

Williams continued, "And we've got the gunner doors open on this thing, and I'm saying to the general, some four-star: 'It wouldn't take much for them to adjust the aim and try to do a ring toss right through our open doors, would it?'"

He gave the same account to a student from Fairfield University in Connecticut in November 2007 when he was being interviewed, saying the rockets passed "just beneath the helicopter I was riding in."

A few days ago, Williams provided a memo to NBC saying that he will temporarily step down and be filled in by Lester Holt. "In the midst of a career spent covering and consuming news, it has become painfully apparent to me that I am presently too much a part of the news, due to my actions," he said.

Williams did not specify when he will return, saying only that, "Upon my return, I will continue my career-long effort to be worthy of the trust of those who place their trust in us."

Because of this, people are now questioning whether or not he really did see a body or bodies during his Hurricane Katrina coverage, after floodwaters engulfed New Orleans.

NBC News President Deborah Turness also said in an internal memo Friday that the network has assigned the head of its own investigative unit to look into Williams' statements.