New York ( CNN ) -- Gotham 's top cop on Tuesday said authorities are looking into the possibility that an Egyptian writer may have been responsible for an online posting that pictured a New York cityscape with the words `` Al Qaeda . Coming Soon Again in New York . '' `` The use of language indicated that , '' said New York Police Commissioner Ray Kelly . `` Its many different dialects in Arabic and our analysts thought that this was Egyptian in nature . '' He said that the graphic image , which surfaced Monday on a few jihadist Web forums and featured the words in the English , did not coincide with any specific online chatter about a potential threat and that it was unclear whether one or multiple individuals was responsible for the posting . `` The Internet is , as we used to say , is the new Afghanistan , '' Kelly told reporters . `` That 's where training happens . That where radicalization happens . It 's become a very valuable tool to the terrorists . '' Still , FBI spokesman J. Peter Donald said that while his agency was also investigating , `` there is no specific or credible threat to New York at this time . '' `` The NYPD Intelligence Division 's cyberunit is investigating the origin and significance of the graphic , '' said police spokesman Paul Browne said earlier Tuesday . `` Until more is learned about their origin , we take all threats against New York City seriously . '' The posting comes just months after the 10 year anniversary of the 2001 terrorist attacks in New York , Pennsylvania and Washington .
NEW : NYC Police Commissioner Ray Kelly said that threat may be `` Egyptian in nature '' Image shows NYPD cityscape with words ` The use of language indicated that , '' . Coming Soon Again in New York The FBI says `` there is no specific or credible threat to New York '' at this time '' The NYC Police and the NYPD are investigating the origins of an online posting .