Michelle McNamara, a true crime writer who founded the website True Crime Diary and the wife of writer, comedian and actor Patton Oswalt, has died, the Associated Press reported Friday. She was 46.

Though Oswalt's publicist confirmed McNamara's death, no cause was given. She died in her sleep Thursday at the couple's Los Angeles home in "a complete shock to her family and friends, who loved her dearly," the AP said, citing Kevin McLaughlin of Main Stage Public Relations.

The couple married in 2005 and have a 7-year-old daughter, Alice.

Oswalt, a popular stand-up comedian, screenwriter, actor and one of Hollywood's go-to script doctors, is also a prolific Twitter user known to mine his family life for material onstage. Following news of his wife's death, he retweeted an obit from The Hollywood Reporter.

Michelle McNamara, Writer and Wife of Patton Oswalt, Dies at 46 https://t.co/ILll2NAqCe pic.twitter.com/KNVogxKG4u — Hollywood Reporter (@THR) April 22, 2016

McNamara, a Notre Dame grad with a creative writing master's from the University of Minnesota, liked to highlight lesser-known cases on her site.

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