FLATBUSH, Brooklyn (WABC) --A missing person's case has now turned into a case of murder.
Police said 42-year-old Phillip Martin is being charged with murder in connection to his wife's disappearance.
She was last seen at the couple's apartment nearly a month ago. On Friday, police escorted Martin from a precinct and charged him with murder.
Raw video of police escorting Martin:
Investigators said he confessed to killing and dismembering 43-year-old Diana Rodriguez-Martin.
"It's gruesome, it's very inhuman, I don't know what would drive an individual to resort to such measures," said Larry Nunes, a neighbor.
Rodriguez-Martin was last seen at their apartment on Jan. 16. Then she vanished without a trace. She was reported missing on Monday.
Neighbors said they heard the couple fighting frequently but never thought something like this could happen.
"I remember the last time I seen them they was fighting they had police up and down," said Denise Cork, a neighbor. "I would hear them arguing all the time, like, 'I'll kill you, I'll F-you up,' always cursing and fighting, so I'm kind of shocked."
Crime scene investigators spent hours Friday sifting through and removing evidence from the couple's fourth floor home.
However, police haven't been able to find Diana's remains.
"It's unfathomable, like to live in such close quarters to someone who could possibly be capable of the things that it's just unfathomable, you never think that, no," said Perri Rodolph, a neighbor.
Police said Martin has three prior arrests and two of them were for attacking his wife.