SEATTLE, Washington (CNN) -- Raul Flores thought federal agents had barged with guns drawn into his home in Arivaca, Arizona, in the middle of the night.



Shawna Forde, 41, denies involvement in the shooting deaths of an Arizona man and his daughter.



The woman and two men wore uniforms and identified themselves as U.S. Marshals. They claimed the house was surrounded. They said they were looking for an escaped prisoner, Flores' wife told a 911 dispatcher.



But there was no backup waiting outside, and no fugitive. The marshals were imposters.



They had targeted Flores because they suspected he was a drug trafficker and they wanted to rob and kill him, according to the Pima County Sheriff's Department.



As the intruders searched his home, Flores asked one of the men why his handgun was taped. The man responded by shooting and killing Flores.



"Someone just came in and shot my daughter and husband," Flores' wife frantically told 911. She tells the police operator that she was shot and left for dead with her husband, Raul Flores, 29, and daughter Brisenia, 9, who were both shot in the head.



Police are not releasing the woman's name to protect her identity. But her 911 call, released to the media by the Pima County Sheriff's Department, tells the story of a deadly home invasion by a rogue band of impostors.



As she describes the initial attack, the intruders return to the house. The door can be heard opening.



"They are coming back in! They are coming back in!" the caller screams. She has armed herself with her husband's handgun.



"Get the f--- out," she barks. The order is followed by the explosive sound of gunfire traded as the wounded woman and her would-be killers fire on each other. A man -- one of the intruders -- is hit and groans loudly. The attackers retreat and leave the woman alive and alone with her slain family.  Hear gunfire on the 911 call »



Twelve days later police have the "marshals" in custody on charges of first-degree murder, burglary and aggravated assault. Police identified the suspects as Shawna Forde, 41, of Buena Vista, Arizona; Jason Eugene Bush, 34, of Kingman, Arizona; and Albert Robert Gaxiola, 42, of Tucson, Arizona.



As police put her into a car, Forde told reporters, "I did not do it." The Pima County public defender's office, which represents Forde, Bush and Gaxiola, did not return CNN's calls requesting comment.



Authorities from five different police departments in three states are investigating crimes allegedly involving the trio. Forde's arrest has had even greater reverberations across a community of private citizens who believe the government is not adequately protecting the nation's borders.



Forde was a one-time member of the Minutemen Civil Defense Corps, a citizens group whose self-described mission is to secure the U.S. border, before she started her own smaller border enforcement organization. The accusations against her have given more fuel to Minutemen critics who say the groups dangerously blur the lines between law enforcement and vigilantism.



Forde was well known in anti-immigration circles. She ran a failed campaign for City Council in her hometown of Everett, Washington, that touted her connections to the Minutemen. She posted videos on YouTube of her border patrols and was an outspoken fixture at Minutemen Washington meetings and rallies in Washington state.



But even among this gung-ho group of self-styled border warriors, Forde was extreme, both Minutemen members and their critics agreed.



Washington human rights advocate Luis Moscoso said he had a run-in with Forde during a protest he attended at a 2007 Minutemen conference in Bellingham, Washington. While other Minutemen engaged in a dialogue, Moscoso remembered Forde shouting insults at the protesters.



Moscoso later was shocked, he said, to find his photograph and address on Forde's Web site. "It wasn't a bull's-eye but it was close enough," he said. The Web site was taken down after the
Who did woman and two men pose as in home invasion? Do any of the suspects have ties to Minutemen groups? who has ties with minutemen What age was Raul Flores? whose daughter was shot dead who was targeted
U.S. Marshals. Forde was a one-time member of the Shawna Forde, 29, Raul Flores Raul Flores
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