Bronx Man Beat, Stabbed Girlfriend to Death

Gets 20 Years for Beating with Broomstick, Fatally Stabbing Her with a Steak Knife

File Photo

BRONX - Bronx man who fatally stabbed his girlfriend in the face with a steak knife during an argument will spend the next 20 years in prison.

Kelvin Diaz, 33, was sentenced March 3, 2023 to 20 years in prison and five years' of post release supervision before Bronx Supreme Court Justice Marsha Michael. The defendant pleaded guilty to first-degree Manslaughter on February 16, 2023.

According to the investigation, on January 29, 2021 inside 1965 Lafayette Avenue, the defendant attacked Onelfy Then-Cordero with a broomstick, causing blunt force trauma to her head, which caused her death. 

Diaz then stabbed his girlfriend multiple times in the face with a steak knife.

 

A neighbor called police to report a woman screaming for help. When police arrived and entered the apartment, they found Then-Cordero mortally wounded. 

Diaz was arrested on scene and told officers he stabbed the victim. 

“An argument between a couple escalated to brutality and a woman is dead,” said Bronx District Attorney Darcel Clark. “The defendant has been held accountable but the victim’s loved ones will continue to suffer. We must do all we can to prevent domestic violence, which traumatizes so many people beyond just the victim.”