A black woman was fatally shot inside her home by a police officer who was called to the residence to check on her welfare.
Atatiana Jefferson, 28, occurred in Fort Worth, Texas, in the early hours of Saturday morning.
She is said to have been shot after a neighbour called the police non-emergency line to report that the front door to the home was open.
In body camera video released by police, two officers search the home from the outside with flashlights before one shouts, "Put your hands up, show me your hands." One shot is then fired through a window.
Police said in a statement that the woman was pronounced dead at the scene.
The officer does not identify himself as police in the video. Police said the officer, who's been on the force since April 2018, was placed on administrative leave pending the outcome of an investigation.
The officer's name has not been released.
In the statement, police said the responding officers saw a person near the window inside the home. The officer fired the single shot after "perceiving a threat," the statement said. The bodycam video also included images of a gun inside the residence, but it's unclear if the firearm was found near the woman.
Neighbour James Smith, who initially called police, told the Star-Telegram he was just trying to be a good neighbour.
"I'm shaken. I'm mad. I'm upset. And I feel it's partly my fault," Mr Smith said. "If I had never dialled the police department, she'd still be alive."
Mr Smith said Ms Jefferson and her eight-year-old nephew typically lived with an older woman, who's been in the hospital.
"It makes you not want to call the police department," he added.
Local activists held a press conference Saturday, asking the city to hold the officer who fired the shot accountable. Pastor B R Daniels Jr said he wants the police department to stop what he called "shooting first, asking questions later."
"We want a review of policy, procedures. How do you storm a house, kill a young lady, with an 8-year-old minor in the house, who could have been killed himself," Daniels said.
Authorities said the bodycam footage was released soon after the shooting to provide transparency, but any video taken inside the house could not be distributed due to state law.
The shooting comes less than two weeks after a white former Dallas police officer was sentenced to 10 years in prison for killing her black neighbour inside his own apartment. Amber Guyger said during her trial that mistook Botham Jean's apartment for her own, which was one floor below Jean's.
Guyger, 31, was convicted of murder for Jean's September 2018 death.