Agencies: On Thursday, American police killed an armed man who tried to storm a center of the Federal Bureau of Investigation in the city of Cincinnati, Ohio, after hours of an armed confrontation.

The incident occurred at a time of anger among right-wingers following the FBI's search of former US President Donald Trump's Mar-a-Lago estate in Florida, noting that there are no indications of a link between the two incidents.

The FBI announced that an armed man tried to storm the agency's center in the city of Cincinnati, Ohio, on Thursday morning.

The FBI statement indicated that the incident "triggered the alarm and the response of a special armed unit of the FBI, and the person fled."

According to local media, the person used a nail gun (a device that shoots nails using air pressure) and was carrying an AR-15 rifle and fled by car.

The police spokesman said that law enforcement forces pursued the attacker.

He continued, "When the car stopped, a shootout occurred between the police and the suspect."

The man fled to a cornfield, where security forces surrounded him and unsuccessfully tried to negotiate his surrender, according to a spokesman for the Ohio police in the evening.

The 42-year-old man waved his firearm towards the police, who then fired. He was declared dead immediately.

On Wednesday, FBI Director Christopher Wray condemned threats made against the agency following the raid of Trump's estate.

Wray described the threats as "regrettable and dangerous."

Wray said, "Violence against law enforcement agencies is not the answer, whoever the person who upset you is."

The FBI and the Department of Justice have not yet announced the reason that necessitated the search of Trump's estate in Florida.

However, American media pointed out that the search was conducted under a warrant on suspicion of mishandling classified documents sent to Mar-a-Lago after Trump left the White House in January 2021.