DAVID LETTERMAN: 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.
JOHN MELLENCAMP: The divorce of recording artist John Mellencamp and fashion model Elaine Irwin has been finalized, court documents filed in Indiana show.
The (Bloomington, Ind.) Herald-Times said the former couple has been granted joint custody of their sons Speck, 17, and Hud, 16, with Irwin given primary physical custody.
Mellencamp, 59, was ordered to pay child support, but the amount was not specified. The pair's property and assets are to be divided in keeping with a prenuptial agreement signed before their 1992 wedding, the Herald-Times said.
Mellencamp began dating actress Meg Ryan late last year.
AMBER TAMBLYN: Amber Tamblyn's publicist says the U.S. actress is engaged to comedian David Cross.
People.com reported the news Wednesday, but did not offer any details regarding how the couple got engaged or when they plan to wed. They have been dating for about three years.
Tamblyn, 28, starred on TV's "General Hospital," "Joan of Arcadia" and "House," as well as "The Sisterhood of the Traveling Pants" films.
Cross, 47, is best known for his work on the small-screen comedies "Arrested Development" and "The Increasingly Poor Decisions of Todd Margaret." He also appeared in the movies "Alvin and the Chipmunks" and "Eternal Sunshine of the Spotless Mind."
CHARISMA CARPENTER: Former "Buffy the Vampire Slayer" and "Angel" co-stars Charisma Carpenter and James Marsters are to play a married couple on the U.S. series "Supernatural."
Carpenter played Cordelia on "Buffy" and "Angel," while Marsters played Spike.
TVGuide.com said Wednesday Carpenter and Marsters will appear in the fifth episode of Season 7 of "Supernatural."
Sera Gamble, the show's executive producer, told TVLine the episode could be summed up as "'Bewitched' gone wrong."
The new season is to kick off Sept. 23 on The CW network.
Celebrity Families of 2014 [PHOTOS]