‘Everybody dumbfounded’ after straight A student, 13, stabbed his mother to death in her sleep near infant: Cops

Derek Rosa stabbed his mother to death in their apartment, police said. (Screenshot: WPLG)

Derek Rosa stabbed his mother to death in their apartment, police said. (Screenshot: WPLG)

Police in Hialeah, Florida, say there was no indication of friction or mental health issues in a local family, and yet the 13-year-old son is accused of stabbing his own mother to death in her sleep near his 14-day-old half-sister.

Officers voiced hope that perhaps looking in his laptop might shed light on why Derek Rosa, 13, killed Irina Garcia, 39. He is charged as a minor, but police identified him because he faces a felony — murder in the second degree.

Police Lt. Eddie Rodriguez told Law&Crime that Rosa called 911 Thursday at 11:30 p.m.. The teenager allegedly told dispatch that he stabbed his mother to death.

Rosa was “so polite” even on the 911 call, Rodriguez said. Everything was “Yes, ma’am; no, ma’am,” he said.

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