A woman "slapped" the back of a police car shortly before an Australian woman was shot dead by an officer, according to a search warrant.

Minneapolis police Chief Janee Harteau has resigned at the request of the mayor, who said she lost confidence in her after an unarmed Australian woman was shot dead by a police officer.

An Australian woman who called 911 to report an assault was shot dead by a Minneapolis police officer after his partner was startled by a loud sound near their car.

Relatives of an Australian woman shot dead by US police have said she made an emergency call to report a sexual assault before the incident.