According to a police account of the incident, Lyles pulled out a knife when officers responded to the call.Family and friends of Charleena Lyles, a pregnant mother of four who was shot and killed by police officers last week, will gather in Seattle on Tuesday evening in memory of the slain woman. They’ve said that because Lyles had been recently released from prison, two police officers were needed at the scene.”While property crimes reports typically require only one officer to be dispatched, two officers were dispatched to this particular call for service because of a recent officer safety caution associated with the caller”, a Seattle police statement said as to why the extra officer was warranted.Ms Lyles’ sister Monika Williams said that her sister was released on the recommendation that she seek mental health counselling, but it is unclear if that was the case or if she was receiving any such care.The four-minute audio from Sunday’s incident opens with the two officers conversing en route to Lyles’ apartment about a separate event, two weeks before, in which Lyle was arrested for threatening responding police with a pair of scissors. After Lyles let them into her home for further questioning, the officers are heard yelling “Get back!” Both officers will be placed on administrative leave during the investigation, authorities said.The children inside at the time were unharmed, and police were trying to determine whether the children had witnessed the shooting.She said Lyles had “mental health issues” that were going untreated. He said that she was anxious that her children would be taken, and that the Brettler Family Place management was trying to get her family out of the apartment complex. According to police documents, she threatened officers with large shears.Suddenly, one of the officers can be heard saying: “Step back, step back!”As police continue to investigate, Lyles’s family and friends are devastated by her loss. Both officers reportedly fired their weapons after she showed a knife.Charleena Lyles, the 30-year-old mother fatally shot by Seattle police on Sunday.Jamieson said Lyles was known to officers. “I could have taken her down”, Williams told the Times.In the choppy audio, the unidentified officers discussed previous visits to Lyles’ residence, before greeting her and asking to come into the apartment. The parallels between Lyles’s shooting and that of Castile’s, along with the countless other police shootings, primarily of black people, have not gone unnoticed.’Why couldn’t they have Tased her?”Wait, is this the one with like the three kids?” one officer says on the audio before the shooting.At a vigil Sunday night, family members and others called for justice and said the shooting was racially motivated.”Our historic police reforms, from de-escalation training to civilian-monitored force review, are in place to address such crises”, he said.The deadly shooting is expected to be reviewed by the department’s Force Investigation Team and the Office of Professional Accountability, according to the mayor and city police Chief Kathleen O’Toole.