Dr. Amie Harwick, a well-known Hollywood sex therapist and former fiance of US comedian Drew Carey, has reportedly been killed by an ex-boyfriend after a fight at her Los Angeles home.

Harwick was discovered unresponsive on the ground below a third-story balcony around 1.16am on Saturday in Hollywood Hills after police were dispatched for reports of a woman screaming, according to CBSLA.

They met Harwick's flatmate in the street, who told them Harwick was being assaulted inside the home, reports news.com.au.

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Officers found Harwick "gravely injured" and unresponsive. There was "possible evidence of a struggle" and signs of an intruder, LAPD said.

The Los Angeles Fire Department transported her to a local hospital, where she later died, according to a spokesperson.

Harwick's ex-boyfriend, 41-year-old Gareth Pursehouse, was taken into custody and charged with murder, police said. The pair had recently broken up, according to Deadline.

The report said that detectives "learned that victim had recently expressed fear about a former boyfriend and had previously filed a restraining order" against him.

The restraining order had recently expired.

Drew Carey and Amie Harwick in 2017. Photo / Getty Images
Drew Carey and Amie Harwick in 2017. Photo / Getty Images

Harwick, the author of The New Sex Bible for Women, was engaged to Drew Carey in 2018. The couple reportedly had an "amicable split".

In a 2018 interview with the podcast Holly Randall Unfiltered, Harwick described how Carey supported her in the face of negative comments on social media.

"'I bet she's a gold digger. I bet she's wanting him for this'," Harwick said in describing the comments. "Actually no, I have my own business and I have a degree."