(CNN) -- A new video purportedly featuring an introduction from al Qaeda leader Osama bin Laden was released Tuesday -- the sixth anniversary of the September 11, 2001, attacks on New York and Washington.
This frame grab was taken by IntelCenter, a U.S. government contractor monitoring al Qaeda messaging.
Although CNN could not independently confirm the authenticity of the video, it did feature the logo of As-Sahab Media, the company that traditionally handles al Qaeda communications to the public.
The 47-minute videotape was obtained by terrorism expert Laura Mansfield before it was to appear on several Islamist Web sites known for carrying statements from al Qaeda and other radical groups.
In the 14-minute introduction to the video, a voice identified as bin Laden praises 9/11 hijacker Waleed al-Shehri, from Saudi Arabia, who sat in seat 2B on American Airlines Flight 11, which crashed into the north tower of the World Trade Center. The voice speaking in Arabic is heard over a still picture of bin Laden and contains English subtitles.
The balance of the recording is a video will read by al-Shehri, with 9/11 symbols in the background. He is the seventh of the 19 hijackers to appear in such a will since the terrorist attacks.
The voice and picture in the video sound and appear similar to a bin Laden video released late last week. Timeline: bin Laden's video messages »
There is no indication that any part of the video was recorded recently. The only element tying it to somewhat-current events is in the introduction and the mention of the death of al Qaeda in Iraq leader Abu Musab al-Zarqawi, who was killed during a U.S. raid in June 2006.
For several weeks, radical Islamist Web sites have been announcing that there would be "good news soon from Sheikh Osama bin Laden." E-mail to a friend
CNN's Octavia Nasr contributed to this report.
All About Osama bin Laden • Al Qaeda
A second, 47 minute video that allegedly shows al-Qaeda's leader Osama bin Laden has aired on the Internet, the six-year anniversary of the September 11, 2001 attacks.

Reports are saying that the video only shows an image of bin Laden, much like the ones in the previous tape, but that his voice can be heard praising Waleed al-Shehri, a 9/11 hijacker who was aboard one of the planes that hit the World Trade Center in New York City, American Airlines Flight 11, in a "eulogy" with the title being ''The Wills of the Heroes of the Raids on New York and Washington.''

The tapes authenticity has yet to be verified.

The first videotape of bin Laden was released on September 7 and on Monday, As-Sahab, an Islamic media agency, stated that a new video would be released soon.