Routh was charged in federal court Monday with possession of a firearm while a convicted felon and possession of a firearm with a defaced serial number.

How did officers arrest the suspect?

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Sunday’s incident comes more than two months after a gunman shot Trump at a rally in Butler, Pennsylvania, on July 13. Trump’s ear was bloodied. One man died and two others were wounded. A Secret Service sniper killed the shooter.

Large spaces like outdoor gatherings and golf courses—both favorites of Trump—pose challenges for Secret Service protection. Golf courses, which have large, open areas with trees, shrubs or other obstructions, present unique challenges. They are often bordered by roads or public lands.

When Trump plays golf, he travels the course in a protective bubble of agents. They cover a range of three to five holes in front of and behind Trump, discreetly using high-tech tools for any sign of a potential attacker, USA TODAY reported.

Agents do this while trying to accommodate other golfers on the course. They typically try to blend in by wearing golf gear and riding in golf carts in front of and behind the former president as he plays, CNN reports. Other agents for Trump survey the grounds and surroundings as he and they drive around the course.

It was one of those officers who saw the gun in the bushes and opened fire, police said. An estimated four to six shots were fired by that officer and others. Court records later said the suspect did not fire.

According to NewsNation, the backpack containing ceramic tiles may have been used as a makeshift bulletproof vest.

Phone records show the suspect was in the area between 1:59 a.m. and 1:31 p.m. on Sunday afternoon.

What weapon did the suspect have?

Routh, formerly of Hawaii and Greensboro, N.C., left behind a weapon described as an “SKS-style rifle.” The rifle’s serial number was crossed out, later court documents show.

Suspect arrested after new assassination attempt on Trump

STORY: Former U.S. President Donald Trump is safe after shots were fired at his golf course in West Palm Beach, Florida, in what the FBI is calling another assassination attempt. Officials say Secret Service agents spotted a gun barrel sticking out of the bushes as they cleared holes in Trump’s course, then fired at a gunman near the property line, just a few hundred yards away

How the incident unfolded

All times are approximate and apply to the east of the country.

13:31 hrs: A Secret Service agent shoots a suspect after spotting a gun in the bushes. The suspect flees and a witness sees him get into a black Nissan SUV.

2:14 PM: The Martin County Sheriff’s Office stops the suspect’s vehicle on I-95 heading north. The witness is brought in and identifies the suspect.

2:49 PM: According to Anthony Guglielmi, chief communications officer for the Secret Service, Trump is safe.

15:27 hrs: The Martin County Sheriff’s Office reported on Facebook that a suspect has been arrested.

5:00 PM: Secret Service, FBI and Palm Beach County Sheriff hold press conference about incident.

5:21 PM: JD Vance, Trump’s running mate, tweeted that Trump is safe.

Contributions by: Josh Meyer, John Bacon, Michael Collins, USA TODAY

Source: USA TODAY Network reporting and investigation; Reuters