The Minnesota police officer who allegedly fatally shot an unarmed Australian woman was being investigated over a "violent" arrest.
Justine Damond's family says she had called police on Saturday night to report a suspected sexual assault nearby.
But once police arrived, she was shot and killed. The officers' body cameras weren't on, and the police department says the interaction wasn't captured by the dash camera.
Ms Damond's fiancé, Don Damond, has been left heartbroken by her death. The two were set to marry next month and she had already taken his name professionally.
He told local media the family have received "almost no additional information from law enforcement" about what happened.
"We've lost the dearest of people and we're desperate for information," he said.
"Piecing together Justine's last moments before the homicide would be a small comfort as we grieve this tragedy."
According to CBS News, Ms Damond was wearing her pyjamas and had gone to talk to the police when they arrived.
While at the driver's door and talking to one officer, passenger Officer Mohammad Noor, with his firearm already drawn, allegedly shot her through the door.
Both officers have been put on paid administrative leave, and Mr Noor has offered his condolences to the family in a statement.
Officer already under investigation
It's now emerged Mr Noor, an officer for just two years, was already under investigation for another arrest.
After starting his career in 2015, he reportedly has two open complaints against him, one from 2017 and one from 2016, according to local media.
In one it's accused he "violently and forcibly detained [a woman] and transported her against her will".
The complaint, which is still ongoing, accuses Mr Noor of false imprisonment, battery, assault, negligence and violating civil rights.
'Our lives are forever changed'
While tributes pour in for Ms Damond, remembering her as a teacher with a "loving and generous heart", a grieving Mr Damond says he doesn't know how to go on.
"Our lives are forever changed as a result of knowing her," he said.
"It's difficult to fathom how to go forward without her in my life."
The fatal shooting is being investigated and Minneapolis mayor Betsy Hodges says she's been left "heartsick and deeply disturbed", questioning why the body cameras weren't turned on.
"Every officer who is responding to 911 calls is wearing a body camera," she told CBS News.
"If they're having an interaction that falls under the policy for activating them, they need to activate them."
The police department was equipped with some 600 body cameras after recent shootings by officers, including the fatal shooting of Philando Castile.
Police are investigating whether there is any video of the shooting. They say Ms Damond wasn't armed at the time.