He wore train-track braces and a teenager's awkward smile, but suspected assassin Tyler Robinson could not be more 'handsome' and 'wonderful' in the eyes of his mother and grandmother.

Between them, proud Amber Robinson, who worked with disabled youngsters, and her mother-in-law Debbie posted dozens of photos of the young man they doted on, along with his two younger brothers.

Today, this once-gawky teenager is, according to US officials, the hate-filled extremist who this week became America's most wanted man – with President Donald Trump already demanding he be executed by the state.

He went from being 'interested' in politics to being apparently obsessed by it – somehow transformed from an ordinary son in the family's $600,000 six-bedroom home in Washington, Utah, about 260 miles south of where Charlie Kirk was murdered, into one of the most notorious characters in US history, according to US officials.

According to officials last night, Robinson had allegedly said during a recent dinner that 'Charlie Kirk was full of hate and spreading hate'.