Derek Rosa, 13, also told a Hialeah Police Department detective how he used a "big-sized kitchen knife" to fatally stab Irina Garcia, 39, on Oct. 12, newly released police interrogation footage showed on Friday.
A Miami-Dade County judge is expected to decide Friday whether Derek Rosa, 13, who is accused of killing his mother, Irina Garcia, 39, in October will be transferred back to juvenile detention.
A 13-year-old Florida boy pleaded not guilty in the stabbing death of his mother, as he stands accused of murdering the woman and sending photos of her butchered body to friends.