MIAMI — Four days before his first-degree murder trial was set to begin, 15-year-old Derek Rosa pleaded guilty Friday to killing his mother in 2023.
Rosa pleaded guilty to second-degree murder instead, getting a 25-year sentence under a deal with prosecutors.
Hialeah police said Rosa, then 13, stabbed his 39-year-old mother, Irina Garcia, 46 times as she slept next to her newborn daughter at their apartment at 211 W. 79th Place on Oct. 12, 2023…