MIAMI: Police in Florida were investigating the murder of a three-year-old boy who was shot and killed at his own birthday party on Saturday evening .
Authorities were offering a US$15,000 reward for information leading to the arrest of suspects in the case. Videos from the party show the children playing in a pool at the house, surrounded by colorful balloons.Officers arrived on the scene after being alerted through the ShotSpotter system, a technology that listens for gunshots and is installed throughout nearly 100 American cities.
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