Australia live news: Woolworth salad recall over safety fears; Dutton blasts social media over facilitating extremists

As experts express disbelief that Train brothers were not on the radar of security services, opposition leader says rightwing extremism is ‘domestic terrorism’

The police union has called for security to be reviewed amid concerns of reprisal attacks and officers holding genuine fears for their safety, according to Australian Associated Press, quoting sources.

There are reports about the videos posted by Gareth and Stacey Train voicing violent intent towards police. Gareth posted at least 12 videos online in the six weeks prior to the attack and some officers are named in the videos. The director general of intelligence agency Asio, Mike Burgess, is featured in two.