WEST PALM BEACH, United States (AFP) — Ryan Routh, the 58-year-old man accused of plotting to kill Republican presidential candidate Donald Trump at his Florida golf course, pleaded not guilty on Monday to several federal charges.

His lawyer Kristy Militello entered the not guilty plea during a brief arraignment in a West Palm Beach federal courthouse and requested a jury trial.

Wearing a beige prison uniform and shackles on his wrists and ankles, Routh answered “yes, your honor,” when the magistrate judge asked him if he was aware of the charges against him.

Routh was arrested on 15 September after a Secret Service agent saw the barrel of a rifle poking out from brush on the perimeter of the West Palm Beach golf course where Trump was playing a round.

The agent opened fire and Routh, who fled in a vehicle, was arrested shortly later.

He has been charged with attempted assassination of a major presidential candidate, assaulting a federal officer and firearms offenses.

A federal judge ruled last week that Routh, identified as a Hawaii resident, should remain in custody.

Federal Bureau of Investigation analysis of Routh’s phone showed he had been in Florida since 18 August, and his devices were located multiple times between that date and 15 September near Trump’s golf course and his Mar-a-Lago residence, according to prosecutors.

Before being spotted by the Secret Service agent, Routh spent nearly 12 hours in the vicinity of the Trump International Golf Club, according to his phone location data.