NEW HAMPSHIRE — Federal Aviation Administration contractor Dean DelleChiaie has been arrested on charges of threatening to kill President Donald Trump, prosecutors said. DelleChiaie, a mechanical engineer based in New Hampshire who works for the department that oversees U.S. airspace, is due to appear in court on Tuesday.

Prosecutors said DelleChiaie used his work computer to search the internet for how to get a gun into a federal facility and for the phrase "I am going to kill Donald John Trump." According to court filings, the FAA reported him to law enforcement after he asked the agency's IT department to delete his search history from his work computer. A Secret Service agent interviewed DelleChiaie at his home on February 3, and he allegedly admitted to conducting the searches, prosecutors said. He also admitted to owning three guns.

Investigators stated in court filings that DelleChiaie said he was motivated by frustration with the current administration over multiple issues, including the election, presidential pardons, and the "Epstein files." On April 21, he used his personal computer to email the White House with the subject line "Contact the President," according to prosecutors.

The message read: "I, Dean DelleChiaie, am going to neutralize/kill you - Donald John Trump - because you decided to kill kids - and say that it was War - when in reality - it is terrorism. God knows your actions and where you belong."

If found guilty, DelleChiaie faces up to five years in prison and a fine of $250,000. The U.S. Department of Justice said there have been three other prosecutions for threats against Trump in the past week.

Former FBI director James Comey turned himself in to police last Wednesday after he was charged with allegedly threatening Trump in an Instagram photo of seashells. A South Carolina man was arrested by the Secret Service on Monday for a threat against Trump, prosecutors said. Prosecutors said the man had written on his car that he was on his way to Washington "to kill the pres."

Last week, a Florida man pleaded guilty to making threats against Trump and other public officials and members of Congress. "Criminal threats directed at public officials are becoming alarmingly more common, and this must stop now. We have zero-tolerance for such criminality in the Northern District of Florida and will seek maximum punishments to keep our public officials safe," said John Heekin, U.S. attorney for the Northern District of Florida.

Less than two weeks ago, a gunman stormed into the White House Correspondents' Dinner in Washington in an alleged attempt to kill Trump and other U.S. government officials.