London police announced Tuesday the arrest of a man suspected of being armed after he approached the Buckingham Palace fence and threw objects believed to be firearm cartridges into the palace garden.

A police statement said, "A security cordon was set up after a suspicious bag was found in the man's possession," noting that experts detonated it as a precaution.

The police indicated that the suspect was arrested at around 19:00 (18:00 GMT), noting that the arrest comes a few days before the coronation of Charles III as King of Britain in a ceremony that will be attended by kings and senior leaders from around the world.

Later, the police announced that they are not currently dealing with the case as terrorism-related.

About three hours after the incident, the police announced that the man had been arrested on suspicion of carrying an offensive weapon, and after being searched, a knife was found in his possession.

"Police officers immediately arrested the man," said a statement from London Police Chief Joseph MacDonald.

"There were no reports of gunfire or injuries, either among the soldiers or the general public," McDonald said.

He added that "two policemen are still at the site and investigations are continuing."

British media reported that King Charles, 74, was not in the palace, nor was his wife, Camilla, 75.

Palace officials did not want to make any comment.

On May 6, the coronation ceremony, which dates back nearly a thousand years to the celebration, will take place in Westminster Abbey, according to a tradition that has followed since William the Conqueror in 1066.

The event, which will attract thousands of British and foreign tourists to London, will coincide with the start of a weekend of festivities, including Sunday local concerts and a concert at Windsor Castle in which British stars refused to participate, and then a public holiday on Monday during which the British were invited to do volunteer work.