INTERVIEW: Professor Donna Chung on the Floreat murder case.

It's several days now since mother and daughter Jenny and Gretl Petelczyc were shot dead in their own home in Floreat, WA. The killer's daughter, Ariel Bombara, has revealed she had warned police about the dangers her father posed. In reply, WA Police Minister Paul Papalia said police did not receive any formal record of complaint from Ms Bombara and her mother about violence, in the lead up to the tragedy. Now advocates are calling for that threshold to be lowered, so police can move quicker to intervene, especially when there are guns involved. SBS WA Correspondent Christopher Tan has been speaking to the Chair of WA's Centre for Women’s Safety and Wellbeing, Donna Chung.