NEW YORK, Aug. 17 (UPI) -- The New York Police Department and the FBI are investigating threats against comedian David Letterman on a jihadist Web site.
AM New York quoted Umar al-Basrawi as posting a message online encouraging "righteous Muslims in America" to "cut the tongue of this lowly Jew and shut it forever."
The online commenter is apparently upset by remarks Letterman, who was raised Presbyterian, made during his June 8 "Late Show" monologue about the killing of a senior al-Qaida leader, the report said.
Letterman's mining for humor the death of Ilyas Kashmiri "showed his evil nature and deep hatred for Islam and Muslims," AM New York quoted al-Basrawi as saying in his posting.
Charles Strozier, director of the Center on Terrorism at New York's John Jay College of Criminal Justice, said the threats against Letterman are no joke.
"It could be a total hoax, and it probably is, but in this world of mass communication, something that seems frivolous can intensify if it gets picked up by the wrong people," Strozier told the newspaper.