Convicted killer of 15 year-old Lesandro ‘Junior’ Guzman-Feliz was found dead in prison on Friday according to the Department of Corrections website.
Jonaiki Martinez-Estrella, aged 31, was discovered deceased while serving a 25-year prison sentence at Coxsackie Correctional Facility for his conviction on second-degree murder charges.
He was found guilty following the fatal stabbing of Junior in June 2018.
Thirteen other defendants involved in Junior’s murder have been convicted and are currently serving time in prison.
Junior was mistaken for a member of the Sunset gang, prompting the Trinitarios to chase and ultimately attack him in the Bronx.
The brutal attack involving knives and a machete took place at the Cruz and Chiky Grocery.
Recently, a Bronx Criminal Court judge resentenced Estrella to 25 years to life in May 2025.
His cause of death was not immediately made known.
