U.S. Customs and Border Protection says one of its agents returned fire at a person near the U.S.-Canada border in Pittsburg, New Hampshire, early Sunday morning.

CBP Commissioner Rodney Scott confirmed that the agent struck the individual, who has not been identified. The person was taken to a nearby hospital, and their prognosis is unclear.

"The FBI Boston Field Office will be investigating the incident. CBP is cooperating fully with investigators. For more information, we refer you to the FBI," Scott told WMUR.

The FBI says the shooting took place at roughly 1 a.m. on Sunday and that their preliminary investigation indicates the person opened fire on the agent first.

The FBI's Evidence Response Team arrived at the scene of the shooting shortly after the incident.

The shooting came the same morning that a man was shot and killed after allegedly breaching the secure perimeter of President Donald Trump’s Mar-a-Lago estate in Palm Beach, Florida.

The U.S. Secret Service said that incident occurred around 1:30 a.m. when the suspect made an "unauthorized entry" through the north gate of the resort as another vehicle was exiting.

The man has been identified as 21-year-old Austin Tucker Martin of North Carolina, Palm Beach County Sheriff Ric Bradshaw confirmed to Fox News.

The suspect was observed carrying what appeared to be a shotgun and a fuel can. Agents and a deputy from the Palm Beach County Sheriff’s Office (PBSO) confronted him.

"They confronted a white male that was carrying a gas can and a shotgun. He was ordered to drop those two pieces of equipment that he had with him – at which time he put down the gas can, raised the shotgun to a shooting position," Bradshaw told reporters. "At that point in time, the deputy and the two Secret Service agents fired their weapons and neutralized the threat."

Bradshaw said the suspect did not exchange any words with law enforcement officers who instructed the man to "drop the items." 

The man was pronounced dead at the scene.

No Secret Service or PBSO personnel were injured, and no Secret Service protectees were present at the location during the time of the incident, officials said. 

Fox News' Ashley Carnahan contributed to this report.