WASHINGTON — Federal prosecutors said Tuesday that the man accused of stalking former President Donald Trump for a month before aiming his rifle through a fence at Trump’s private golf course on Sept. 15 was indicted on the charge of an attempted assassination of a political candidate.

The Justice Department said a federal grand jury in Miami late Tuesday returned an indictment charging Ryan Wesley Routh, 58, of attempting to kill the GOP presidential nominee while at Trump International Golf Club in West Palm Beach, Florida.

“Violence targeting public officials endangers everything our country stands for, and the Department of Justice will use every available tool to hold Ryan Routh accountable for the attempted assassination of former President Trump charged in the indictment,” Attorney General Merrick Garland said in a statement.

“The Justice Department will not tolerate violence that strikes at the heart of our democracy, and we will find and hold accountable those who perpetrate it. This must stop,” Garland said.

The maximum sentence for the attempted assassination charge is a life sentence. Routh remains in pretrial detention.

The case is being handled by U.S. District Judge Aileen Cannon, who previously dismissed criminal charges against Trump related to illegally allegedly keeping classified documents after he left the presidency. Cannon was appointed by Trump to the federal bench.

Prosecutors on Monday detailed that Routh stalked Trump for a month, noting events Trump would be at, and wrote a note where he offered $150,000 to anyone who could “finish the job,” according to court filings.

This is now officially the second assassination attempt against Trump, after the first one in Butler, Pennsylvania, where Trump sustained an injury to his ear. He was not injured at his Florida golf club.

Acting Secret Service Director Ronald Rowe confirmed that Routh did not fire his weapon and that the gunshots heard were from a Secret Service agent who saw part of Routh’s gun poking out from the chain link fence and immediately fired.

Routh has already been charged with possession of a firearm as a convicted felon and with obliterating the serial number on a firearm, according to court records. With those charges, he faces up to 20 years in prison.