Danish Prime Minister Mette Frederiksen at a news conference on April 15, 2024. JAKUB PORZYCKI/NURPHOTO VIA GETTY IMAGES

Danish Prime Minister Mette Frederiksen was attacked by a man in a Copenhagen square on Friday, her office said, adding that the man had been arrested.

"Prime Minister Mette Frederiksen was hit by a man Friday evening on Kultorvet in Copenhagen. The man was subsequently arrested," the prime minister's office said in a statement to the AFP news agency, describing Frederiksen as "shocked by the incident."

No other details were immediately released and officials did not say if Frederiksen was injured.

Two witnesses, Marie Adrian and Anna Ravn, told newspaper BT that they had seen Frederiksen arrive at the square while they were sitting by a nearby fountain just before 6 p.m.

"A man came by in the opposite direction and gave her a hard shove on the shoulder, causing her to fall to the side," the two women told the newspaper.

They said that while it was a "strong push," Frederiksen did not hit the ground. They said the prime minister then sat down at a nearby cafe.

They described the man as tall and slim, and said he had tried to hurry away but had not gotten far before being grabbed and pushed to the ground by men in suits.

Copenhagen police confirmed that an incident involving the prime minister had occurred but did not provide further details.

"We have one person arrested in the case, which we are now investigating. At this time, we have no further comments or remarks on the case," police said in a statement posted on X.

The manager of a bar in the square told the Reuters news agency he saw Frederiksen walk away after the incident, escorted by security officers.

"Well, I saw the prime minister sitting with a friend at this table and just I think was one minute, two minutes afterwards, four PET (Danish national security and intelligence service) guys showed up, talked about an arrest has been made. And then she was escorted by the four PETs to some place around in the middle of the square and then escorted just a way around the corner," Soren Kjaergaard said.

Leaders in Denmark and elsewhere in Europe condemned the assault, which happened just days before the EU parliamentary elections on Sunday.

"I must say that it shakes all of us who are close to her," Danish Environment Minister Magnus Heunicke said in a post to social media. "Something like this must not happen in our beautiful, safe and free country."

"An attack on a democratically elected leader is also an attack on our democracy," said Sweden's Prime Minister Ulf Kristersson.

Charles Michel, the president of the European Council, called it a "cowardly act of aggression."