Bomb-making list, firearms, extremist flags seized from Perth man accused of backing Bondi attackers

Back and shoulder of a police officer in uniform.

Police have charged the man with three offences after he allegedly posted antisemitic comments on social media. (ABC News: Keana Naughton)

In short:

Police charged Martin Thomas Glynn with making antisemitic comments on social media after he allegedly pledged support for the Bondi shooters just hours after the attack.

When they searched his home, they allegedly found a bomb-making shopping list, terrorist organisation flags, six registered rifles and a large amount of ammunition. 

A tip of from the public led to his arrest, and the WA police commissioner said authorities had "no record of concern for this individual".