New York City was named as the target of a new terrorism threat Monday, as reports emerged that al Qaeda seems to have targeted the city in a foreboding online graphic.

New York City, which has successfully averted a number of terror threats since the attacks of Sept. 11, 2001, appears to be in the crosshairs of extreme Islamic terrorists yet again.

The oddly sleek image features a stylized photo mock-up of New York's skyline with tourists in the foreground and overlain with the words Al Qaeda Coming Soon Again In New York in bold block letters.

The NYPD e-mailed the image out to the press in order to let the public know about the threat:

The NYPD Intelligence Division's cyber unit is investigating the origin and significance of the graphic below which appeared today on [a] few Arabic-language al Qaeda forums, the NYPD wrote. It was posted in the 'artwork and design' section of the forum below. Until more is learned about their origin, we take all threats against New York City seriously.

A U.S. intelligence official told Reuters that federal agencies will be investigating the graphic and assessing how serious of a threat it poses.

FBI spokesman J. Peter Donald told NBC New York that the bureau is also looking into the threat:

The FBI's Joint Terrorism Task Force is aware of the posting and investigating its authenticity and origin, Donald said. The FBI takes all threats seriously, and at his time there is no specific or credible threat to New York.