NICE, France -- According to CBS News at least 73 people killed Thursday in Nice, France, after a truck plowed into a crowd, according to a tweet from the city's mayor, Christian Estrosi.

Translated into English, the mayor's tweet, sent out about 5:30 p.m. ET, read: "Dear Nice, the driver of a truck seems to have left dozens dead."

The mayor asked people to remain at home for the time being and said there would be more information to come.

The truck plowed into the crowd as people were observing Bastille Day, a holiday celebrated in France and in French-speaking regions that commemorates the 1789 storming of the Bastille and the start of the French Revolution.

The driver of the truck has been shot, Le Monde newspaper reported, crediting the word to an unidentified official.

"People were running - it's panic," a journalist from Nice told Le Monde. "The scene is awash in blood of the wounded."

Nice is located on the French Riviera.