2nd death in mad stabbing spree

A Queens man has been charged with knifing his half-brother to death inside their boarded-up, fire-damaged home, police said Friday.

Detectives grabbed Wkorasky Voltaire a few hours after his sibling McKenzie Placide, 22, was found dead inside the burned-out home on 208th St. near 100th Ave. in Queens Village about 4:45 a.m. Thursday.

A witness saw Voltaire, 29, running from the home just before the body was found, sources said.

Cops arrested Voltaire on murder and weapons possession charges Thursday afternoon.

An unhinged Bronx man who killed his girlfriend and stabbed his father and brother in back-toback bloodbaths may face a new murder charge after his dad succumbed to his injuries last month, police said.

Jeancarlo Jimenez, 29, first stabbed his father, Ramon Sr., 60, and brother, Ramon Jr., 34, inside their Gleason Ave. apartment in Unionport on March 1. He also assaulted his 51-year-old mother, grabbing her by the head and slamming her to the ground during the frenzied attack, police said.

Then Jimenez went to his girlfriend Mercy Capacette’s apartment a half mile away and butchered her with a knife as she ran from her home pleading for help.

Jimenez (inset) is already charged with murder in the death of Capacette, a 29-year-old health care worker and mom.

Jimenez’s mother and brother survived the attack, but his father Ramon succumbed to his injuries April 16 at Jacobi Medical Center. His death is now officially a homicide, cops said.

Capacette’s family was happy to hear Jimenez faces a second murder charge, said one of her relatives.

“We are fighting for Mercy,” said one of her four sisters, who asked that her name not be used.

The sister said she wished New York still had the death penalty. “That’s what he deserves,” she said.

Capacette’s family is moving ahead “one day at a time. We’re still shocked. We’re suffering. It’s the worst thing in the world,” the sister said.