Authorities say they are making significant progress in the manhunt for Charlie Kirk's killer.  

The highly influential conservative activist and Donald Trump ally died after being shot at an event at Utah Valley University yesterday morning.  

Investigators say they've recovered a high-powered bolt-action rifle and have good quality video of their latest suspect. 

US Correspondent Richard Arnold told Mike Hosking there has been bipartisan denunciation of the murder. 

He says there have been statements not just from Trump, but every living former president condemning this attack and any and all political violence. 

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