A Florida woman in her mid-70s was repeatedly stabbed to death while walking her dog in what has been described as a "vicious, unprovoked" attack. The Martin County Sheriff's Office said in a statement that deputies were called to the South Wood Community in Stuart, Florida, around 4 p.m. on Thursday, April 2, after neighbors reported that a man was reportedly knocking on doors and acting erratically. Soon after, neighbors reported that the same man was actively stabbing a woman who was walking her dog. The victim's name has not been publicly revealed.