The Eiffel Tower in Paris was evacuated for three hours on Wednesday after police received an anonymous call about a package set to explode, although it was later determined that the package was harmless.

Police set up a security perimeter at 4 p.m. after the call, according to CNN.

It had been the fourth evacuation because of a prank call in several months, authorities said.

Police found the package at the foot of the tower, French law enforcement officials said.

More than 4,000 tourists were evacuated, according to the Associated Press. Eventually, people were allowed back in on the plaza beneath the tower after two hours.