The officer involved claims Michael Steven Sandford – aged 19 – attempted to take his gun with the intention of shooting Donald Trump, the Associated Press reports.

A complaint filed Monday in US District Court in Nevada charges Sandford with an act of violence on restricted grounds.

The complaint cites a report by Special Agent Swierkowski, claiming Sandford told police officers that he drove from California to assassinate Trump. Sandford said he spent the day before the kill attempt at Las Vegas gun range learning how to shoot. He was arrested inside the casino's theater where Trump was speaking.