Police estimate that the fact that five of the six victims in the attack were women, as well as many of the injured, shows that the attacker was specifically looking for them. Joel Cauchi's father: "He had no social skills." Among the murdered - a mother who saved her injured baby - was the daughter of former Australian Football League player Kerry Goode.

Australia observes a day of national mourning today. National flags were lowered to half-mast in Parliament and Sydney Bridge, while the city's Opera House will be illuminated with black ribbon in the evening. "The videos speak for themselves, don't they? Without a doubt, this is our line of inquiry," says NSW Police Commissioner Karen Webb. "It's just so sad. She won't have a mother, it breaks our hearts," says Alastair Clarkson, manager of North Melbourne Football League club, about one of the victims, 38-year-old Ashley Goode, who played for the North Melbourne Dons.