The Eiffel Tower and the surrounding Champs de Mars park were briefly evacuated on Tuesday because of a bomb alert, the fourth in the Paris region in as many weeks, but a search turned up nothing, police said.
The decision to evacuate came after the fire service received a call from a public telephone saying there was a suspect package at the tower, a police spokeswoman said earlier.
It was also the second evacuation of the Eiffel Tower and Champs de Mars due to a bomb alert — which also failed to turn up any explosives — in two weeks.
French security officials said last week the country was on heightened alert after receiving a tip-off of a planned suicide attack on the Paris metro.
Last week, France's national police chief said the country was facing a "peak" terror threat, and that authorities suspect al-Qaida's North African affiliate of plotting a conventional bomb attack on a crowded target.
The French Senate earlier this month voted to ban burqa-style Islamic veils in France, a subject that has prompted warnings by al-Qaida.
Counterterrorism officials in France say the ban is just one of several factors that have made France a target of the group.
Another was France's military logistical support for a July raid by Mauritanian forces against the group that left six of its militants dead.
