A jihadist has called on Muslims to murder David Letterman, saying the U.S. talk show host deserved to have his tongue cut out after he joked about an al-Qaida leader killed in Pakistan, a U.S. monitoring group said. Letterman's not the first celebrity to have had run-ins with death threats and stalkers. Photograph by: Handout, CBS

LOS ANGELES — A jihadist has called on Muslims to murder David Letterman, saying the U.S. talk show host deserved to have his tongue cut out after he joked about an al-Qaida leader killed in Pakistan, a U.S. monitoring group said.

SITE Monitoring Service said the death threat was posted Tuesday on a website used by militants, after the jihadist became enraged seeing Letterman make a joke about militant Ilyas Kashmiri, who is believed to have been killed in an airstrike in Pakistan in early June.

According to a translation by SITE released Wednesday, the writer to the web forum asked Muslims in America: "Is there not amongst you a Sayyid Nosair al-Masri to cut the tongue of this lowly Jew and shut it forever?"

Nosair was convicted of assassinating radical right-wing Rabbi Meir Kahane in New York in 1990. Letterman is not Jewish.

The late-night show host had apparently quipped that Kashmiri would join former al-Qaida leader Osama bin Laden, who was killed by U.S. special forces one month earlier in Pakistan.

Letterman is not the first U.S. comic to receive death threats from supporters of Islamic extremists.

Last year the creators of the animated series South Park were threatened after they depicted the Prophet Mohammad in a bear suit.

Zachary Chesser, the U.S. man who pleaded guilty to providing material support to a terror group and inciting violence against the South Park creators, was sentenced to 25 years in prison.