The Eiffel Tower closed down on Monday after a man began trying to scale the Paris monument.
A person could be seen dangling just below the third and highest level of the structure. A rescuer dressed in red was just above him.
It wasn’t immediately clear how the trespasser managed to get past the stringent security system.
A Paris police spokeswoman said a team of firefighters including a climbing specialist was on the scene and in touch with the intruder, whose motivations remain unclear.
The tower, the tallest structure in Paris, is 324 meters high, about the same height as an 81-story building.