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Disturbing new details have emerged in the brutal stabbing death of a 40-year-old Atlanta woman.

Katherine "Katie" Janness was brutally stabbed and dismembered inside Piedmont Park while walking her dog Bowie Tuesday evening.

Police say Janness died from multiple stab wounds and parts of her body were missing from the "gruesome" crime scene.

According to a Channel 2 Action News reporter, a homophobic slur was scrawled on Janness' body.

Atlanta police have denied the reporter's claim that the information came from a confidential police source.

Still, the FBI is investigating the case as a possible federal hate crime against a member of the LGBT+ community.

Janness' family is "distraught" over the disturbing new details.

A GoFundMe page raised over $61,000 in donations for Janness' funeral.

Police are not ruling out a serial killer on the loose in Atlanta.

Janness was the second woman killed in Atlanta area parks in 24 hours.

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GoFundMe

Tori Lang, 18, was shot to death inside Yellow River Park in Gwinnett County on Tuesday, July 27. Her body was found under a tree around 6:30 a.m. Wednesday. There are no suspects in her murder.

A GofundMe set up by Lang's family has raised nearly $10,000 for funeral expenses.

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11Alive.com

According to 11Alive News, 43-year-old Patrick Boland, an openly ghey man, was found stabbed to death in Piedmont Park around 1:30 a.m. on May 28, 2009. There were no arrests in his case.

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Atlanta police canvassed Piedmont Park and the surrounding neighborhood on Saturday for clues into the brutal murder of a 40-year-old woman.

Katherine "Katie" Janness was stabbed and dismembered while walking her dog sometime before midnight Tuesday, July 27, in Midtown Atlanta.

Janness' life partner pinged her phone and found Janness' dismembered remains around 1 a.m. Wednesday, about 100 yards inside the Charles Allen Drive entrance to Piedmont Park.

Janness' dog Bowie was also fatally stabbed. The dog's saliva will be analyzed for DNA to help catch the killer.

Joe Clark, the father of Janness' life partner, told 11Alive's Joe Henke on Thursday, "the dog died protecting Katie."

"There is a monster on the loose in the city of Atlanta," Clark said.

The FBI confirmed on Thursday that it was joining the investigation. Neither the APD nor FBI explained why the feds were involved in a local murder case.

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11Alive.com

According to police records obtained by 11Alive, the last murder in Piedmont Park was in May 2009. 43-year-old Patrick Boland was found stabbed to death around 1:30 a.m. on May 28, 2009. His killer was never caught.

Investigators are not ruling out a serial killer on the loose in Atlanta. Janness was the second woman killed in an Atlanta area park in 24 hours.

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Tori Lang, 18, was shot to death inside Yellow River Park in Gwinnett County on Tuesday, July 27. Her body was found under a tree around 6:30 a.m. Wednesday. There are no suspects in her murder.