The widow of assassinated conservative activist Charlie Kirk says her cries will 'echo around the world like a battle cry' as investigations continue into the Utah man accused of the crime.

The arrest of 22 year old Tyler Robinson, marks a major break in a case that shocked the country and raised fresh alarms about political violence in a deeply polarised United States.

Robinson is believed to have acted alone, and the investigation is ongoing, Utah's Republican Governor Spencer Cox said. He was arrested on suspicion of capital murder, weapons and obstruction offences and is expected to be formally charged on Tuesday ahead of an initial court appearance.

On Friday, Kirk's widow, Erika, gave her first public remarks since the shooting. Speaking from the office where her late husband host

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