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A NYC woman was killed by her "thug" boyfriend, just days after the woman bragged on social media that her man was a killer.

Jerry Brown, 34, calls himself “Grim Creepa.” His girlfriend, Savannah Rivera, 20, the pregnant mom of a three-year-old son, called him “Mr. 187” — street slang for murderer.

Jerry was a street "thug" and Savannah loved his street edge.


Police say that yesterday Jerry hacked his girlfriend to death with an ax. According to authorities, Jerry hacked Savannah so badly, that her head nearly came off.

Law enforcement sources revealed yesterday that they were charging Jerry with attacking two young moms that left one dead and another fighting for her life. More charges were still pending, law enforcement sources said.

Police claim that Jerry is a violent ex-convict and charged him this morning with murder, attempted murder, and criminal possession of a weapon (the ax).

Jerry has a long history of arrests - including for assault, robbery, burglary and strangulation, along with the more minor offenses of turnstile jumping and drinking in public, sources said.

The alleged killer was arrested in Manhattan at around 3 p.m., the sources said, and has admitted to being at the scene of the murder, the sources added.

Savannah’s friend, Angela Valle, is hospitalized with multiple massive lacerations, including to the back of her head.

The suspect knew both women, police have said.

But social media posts show Brown was dating Valle as recently as last month.

Valle’s Facebook posts from November through March were filled with affection for her beau, who she calls “Grim Creepa.”

“My heart,” she called him in one post from late December.

Chillingly, just six weeks ago, she posted a photo of him sitting shirtless on a messy bed.