Prosecutors allege that Robert Marin, 60, shot and killed his wife, Heather Marin, 50, outside their home in Waddell, Arizona, on March 16. The case centers on events that prosecutors say occurred outside a residence in a gated community. According to the account presented by prosecutors, after the shooting, Marin behaved in a manner witnesses described during the immediate aftermath. One of their daughters, 17, is said to have performed CPR in an attempt to save her mother while the incident unfolded. The reporting also describes details involving Marin’s conduct after the killing. Marin has not been proven guilty; the claims are allegations reported through the criminal justice process. The case is being handled by prosecutors who contend the shooting was deliberate, and the daughter’s actions are presented as part of the circumstances prosecutors say followed the attack. Court proceedings are ongoing, and additional evidence may be presented as the matter moves forward.