Australian woman Justine Damond made two calls to 911 the night she was shot dead by a Minneapolis police officer because she feared that a neighbour was being raped.
A transcript of the two fateful calls was released Wednesday afternoon, US time.
"Hi, I'm, I can hear someone out the back and I'm not sure she's having sex or being raped," Damond, 40, said in the first call made at 11.27pm.
At this time, the officers reported on radio the incident was a "code four", meaning no back up was required.
Two minutes later, at 11.41, the situation had completely changed.
Officers at the scene reported a shooting and called for a police, fire and emergency response.
The incident report notes at 11.41: "ONE DOWN ... STARTING CPR."
Damond had been shot in the abdomen and killed by police officer Mohamed Noor.
An unnamed friend of Noor told the Daily Mail that he and his colleague Matthew Harrity were tense when they arrived at the scene because the caller had been "panicking".
An investigation into the incident revealed on Tuesday that Noor was "startled by a loud sound" before he shot the Australian woman, who had lived in Minneapolis for about three years with her fiance Don and step son Zach.
Minneapolis assistant police chief Medaria Arradondo told reporters on Tuesday that officers had followed up on Damond's report of the suspected sexual assault, but did not find any suspects or evidence.
Noor has refused to submit to an interview with investigators to explain why he shot Damond.