Michael Sandford, being taken away by policemen on Saturday

Court documents in a US court says  a man arrested at a Donald Trump rally in Las Vegas at the weekend,  told authorities he tried to grab a  police officer’s gun so he could kill the candidate.

A complaint filed Monday in U.S. District Court in Nevada charges Michael Steven Sandford with an act of violence on restricted grounds.

It cites a report by Special Agent Swierkowski, whose first name was not included, saying Sandford told officers he drove from California to kill Trump and went to a Las Vegas gun range the day before to learn to shoot.

Sandford later went to a Trump rally at the Treasure Island Casino and approached a Las Vegas police officer to say he wanted an autograph from Trump.

Donald Trump

The report says Sandford was arrested after grabbing the handle of an officer’s gun in an attempt to remove it.

It wasn’t immediately clear if he had an attorney. Las Vegas police say Sandford is 19.

At the rally, Sandford attempted to disarm a uniformed Las Vegas cop while feigning interest in an autograph from the officer working the Republican’s campaign event at the Treasure Island Hotel and Casino.

Nearby officers thwarted the attempted gun theft and quickly apprehended him.