A female activist bared her breasts at Ukraine's Presidential Administration in Kyiv on Friday during a document signing ceremony between Ukrainian President Petro Poroshenko and Belarusian President Alexander Lukashenko. The young woman, who yelled, "Free Belarus," was subdued and taken out of the room.

An Interfax-Ukraine news agency correspondent said the young woman removed her jacket and was not wearing any clothing underneath it. "Free Belarus!" was written in bold letters on her chest. She began yelling the slogan before security guards were able to subdue her and drag her out of room.

The president's press spokesman said the woman was accredited to the ceremony as a journalist.

Police from Kyiv's Pechersky District Precinct were dispatched to the scene to investigate the incident.

Ukrainian media said the woman's name is Anzhelina Diash, a known activist of the FEMEN movement.

Later, during a speech made by Lukashenko, a member of Ukraine's official delegation fell ill and had to be carried out of the room where the Ukrainian and Belarusian presidents were. The man, identified later as Border Service of Ukraine Chief Viktor Nazarenko, received medical treatment.

The incident forced Lukashenko to interrupt his monologue.