An ankle monitor worn by the 13 year old suspect in Tuesday's fatal shooting of a 58-year-old man on his Mid-City stoop has pinpointed the boy at the location of the shooting when it happened, a spokeswoman for Orleans Parish Sheriff Marlin Gusman said Thursday. The ankle bracelet also helped authorities track down the boy, who was found hiding at home in eastern New Orleans after police chased down his 15 year old accomplice and got him to talk