Authorities seek to learn more about motivation behind Charlie Kirk shooting

Investigators have spoken to Robinson’s relatives and carried out a search of his family’s home in Washington, about 240 miles south-west of Utah Valley University, where the shooting took place

A vehicle marked with messages written on its windows in tribute to Charlie Kirk. Picture: Lindsey Wasson/AP

Authorities are still trying to learn more about what motivated the fatal shooting of Charlie Kirk at a college in Utah, as the conservative activist’s family plan a memorial next week to his life and legacy.

Tyler Robinson, 22, of Washington, Utah, has been arrested on suspicion of aggravated murder and other felony offences. Prosecutors are drawing up formal charges that could be filed early next week, when he will make his first court appearance.