US President Donald Trump says his administration is reviewing the fatal shooting of a Minneapolis nurse by immigration agents. 

Alex Pretti was fatally shot while protesting against the immigration crackdown in the city this weekend, three weeks after mother Renee Good met the same fate.  

The facts around the incident including whether he was wielding a gun have been hotly contested, setting up a fresh confrontation between state and federal officials. 

US Correspondent Richard Arnold told Mike Hosking that while Pretti was carrying a concealed weapon, legally, the only thing he had in his hands at the time was his phone.  

LISTEN ABOVE