NYPD busts murder suspect who allegedly threatened suicide by cop

The man suspected of fatally stabbing his girlfriend in her Manhattan pad — and later allegedly threatening suicide by cop — was arrested early Tuesday, officials said.

Joshua Martinez, 33, was taken into custody and charged with murder, assault and harassment, according to police.

“Great investigative work by the 34 Precinct Detective Squad & the Fugitive Enforcement Division,” NYPD Chief of Detectives Rodney Harrison tweeted Tuesday morning. “Joshua Martinez, who was wanted for murder and threatened suicide by cop, was apprehended this morning without incident.”

His girlfriend, Carol Nystrom, 44, was found dead in her Inwood apartment Thursday, authorities said.

Two days later, a man police believe was Martinez rang the NYPD Crimestoppers tip hotline, cops said Saturday.

Instead of turning himself in, he dared cops to come get him, vowing to end his own life and take some of them down with him.

Nystrom’s Facebook page features a backdrop of butterflies, the beach and flowers. She listed her hobbies as “advocating equality and justice for all, photographing graffiti and urban life.”